Participants wave rainbow flags from a Hummer Limousine during the Malta Pride Parade in Valletta, Malta September 15, 2018. REUTERS/Darrin Zammit Lupi

A cyclist rides past a stretched Hummer vehicle parked in a coach bay in London, Britain, December 7, 2017. REUTERS/Toby Melville

A pedestrian views a stretched Hummer vehicle parked in a coach bay in London, Britain, December 7, 2017. REUTERS/Toby Melville

An abandoned Hummer is covered in floodwaters on Interstate 610 after Hurricane Harvey inundated the Texas Gulf coast with rain, in Houston, Texas, U.S. August 27, 2017. REUTERS/Nick Oxford

A man leans out of a Hummer shouting words in support of U.S. Republican presidential nominee Donald Trump while driving through Times Square in New York, U.S., November 9, 2016. REUTERS/Mark Kauzlarich

A Hummer with a tent on the roof is seen in the car camping area at the Coachella Valley Music and Arts Festival in Indio, California April 11, 2015. REUTERS/Lucy Nicholson

Toyota driver Giniel de Villiers of South Africa (L-R), Mini driver Vladimir Vasilyev of Russia and Hummer driver Robby Gordon of the U.S. drive on the Salar de Uyuni salt flat during the 8th stage of the Dakar Rally 2015, from Uyuni to Iquique, January 11, 2015. REUTERS/Jean-Paul Pelissier (BOLIVIA - Tags: SPORT MOTORSPORT)

Hummer driver Robby Gordon of the U.S drives during the sixth stage of the Dakar Rally 2015, from Antofagasta to Iquique, January 9, 2015. REUTERS/Jean-Paul Pelissier (CHILE - Tags: SPORT MOTORSPORT)

Hummer driver Robby Gordon of the U.S drives during the 3rd stage of the Dakar Rally 2015, from San Juan to Chilecito January 6, 2015. REUTERS/Felipe Dana/Pool (ARGENTINA - Tags: SPORT MOTORSPORT)

Pilot Robby Gordon of the U.S. steers his HST Hummer, with co-pilot Johnny Campbell, over the ramp at the symbolic start of the Dakar Rally in front of the Casa Rosada Presidential Palace in Buenos Aires January 3, 2015. REUTERS/Marcos Brindicci (ARGENTINA - Tags: SPORT MOTORSPORT)

Pilot Robby Gordon of the U.S. steers his HST Hummer, with co-pilot Johnny Campbell, over the ramp at the symbolic start of the Dakar Rally in front of the Casa Rosada Presidential Palace in Buenos Aires January 3, 2015. REUTERS/Marcos Brindicci (ARGENTINA - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S. drives his Hummer to technical verification area ahead of the Dakar Rally 2015 in Buenos Aires January 2, 2015. REUTERS/Enrique Marcarian (ARGENTINA - Tags: SPORT MOTORSPORT)

Hummer pilot Robby Gordon of the U.S. greets spectators before technical verification ahead of the Dakar Rally 2015 in Buenos Aires January 2, 2015. REUTERS/Enrique Marcarian (ARGENTINA - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S (R) and co-pilot Kellon Walch repair their Hummer during the ninth stage of the Dakar Rally 2014, from Calama to Iquique, January 14, 2014. REUTERS/Jean-Paul Pelissier (CHILE - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S drives his Hummer during the fourth stage of the Dakar Rally 2014 from San Juan to Chilecito January 8, 2014. REUTERS/Jean-Paul Pelissier (ARGENTINA - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S drives his Hummer during the fourth stage of the Dakar Rally 2014 from San Juan to Chilecito January 8, 2014. REUTERS/Jean-Paul Pelissier (ARGENTINA - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S drives his Hummer during the fourth stage of the Dakar Rally 2014 from San Juan to Chilecito January 8, 2014. REUTERS/Jean-Paul Pelissier (ARGENTINA - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S drives his Hummer during the fourth stage of the Dakar Rally 2014 from San Juan to Chilecito January 8, 2014. REUTERS/Jean-Paul Pelissier (ARGENTINA - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S drives his Hummer during the fourth stage of the Dakar Rally 2014 from San Juan to Chilecito January 8, 2014. REUTERS/Jean-Paul Pelissier (ARGENTINA - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S drives his Hummer during the fourth stage of the Dakar Rally 2014 from San Juan to Chilecito January 8, 2014. REUTERS/Jean-Paul Pelissier (ARGENTINA - Tags: SPORT MOTORSPORT)

Robby Gordon and Kellon Walch of the U.S. power their Hummer from the podium during the departure ceremony of the sixth South American edition of the Dakar Rally 2014 in Rosario January 4, 2014. REUTERS/Enrique Marcarian (ARGENTINA - Tags: SPORT MOTORSPORT)

A Hummer painted with the Syrian flag, which is usually seen travelling around town playing patriotic music, is parked near the Cental Bank in Damascus April 8, 2013. Picture taken April 8, 2013. REUTERS/Stringer (SYRIA - Tags: SOCIETY)

Dakar Director Etienne Lavigne (3rd R) and Hummer #315's co-pilots Robby Gordon (2nd R) and Kellon Walch (R) of the U.S. are seen near the Hummer after it crashed during the 4th stage of the Dakar Rally 2013 from Nazca to Arequipa, January 8, 2013. REUTERS/Franck Fife/Pool (PERU - Tags: SPORT MOTORSPORT)

Dakar Director Etienne Lavigne (L) and Hummer #315's co-pilots Robby Gordon (C) and Kellon Walch of the U.S. are seen near the Hummer after it crashed during the 4th stage of the Dakar Rally 2013 from Nazca to Arequipa, January 8, 2013. REUTERS/Franck Fife/POOL (PERU - Tags: SPORT MOTORSPORT)

Robby Gordon (2nd R) of the U.S. and co-pilot Kellon Walch (R) are seen near their Hummer after they crashed during the 4th stage of the Dakar Rally 2013 from Nazca to Arequipa, January 8, 2013. REUTERS/Franck Fife/Pool (PERU - Tags: SPORT MOTORSPORT TPX IMAGES OF THE DAY)

Robby Gordon (L) of the U.S. and co-pilot Kellon Walch are seen near their Hummer after they crashed during the 4th stage of the Dakar Rally 2013 from Nazca to Arequipa, January 8, 2013. REUTERS/Franck Fife/Pool (PERU - Tags: SPORT MOTORSPORT)

Robby Gordon (L) of the U.S. and co-pilot Kellon Walch are seen near their Hummer after they crashed during the 4th stage of the Dakar Rally 2013 from Nazca to Arequipa, January 8, 2013. REUTERS/Franck Fife/POOL (PERU - Tags: SPORT MOTORSPORT)

Robby Gordon (R) and co-pilot Kellon Walch of the U.S. pose with their Hummer on the podium during the departure ceremony of the fifth South American edition of the Dakar Rally 2013 in Lima January 5, 2013. REUTERS/Janine Costa (PERU - Tags: SPORT MOTORSPORT)

Robby Gordon and co-pilot Kellon Walch of the U.S. jump from the podium in their Hummer during the departure ceremony of the fifth South American edition of the Dakar Rally 2013 in Lima January 5, 2013. REUTERS/Janine Costa (PERU - Tags: SPORT MOTORSPORT)

Robby Gordon (L) of the U.S and his navigator Kellon Walch try to recover their Hummer, stuck in the sand during the first stage of the Dakar Rally 2013, from Lima to Pisco, January 5, 2013. REUTERS/Pool (PERU - Tags: SPORT MOTORSPORT)

Robby Gordon (L) of the U.S and his navigator Kellon Walch try to recover their Hummer, stuck in the sand during the first stage of the Dakar Rally 2013, from Lima to Pisco, January 5, 2013. REUTERS/Pool (PERU - Tags: SPORT MOTORSPORT TPX IMAGES OF THE DAY)

Robby Gordon of the U.S stands near his Hummer, stuck in the sand during the first stage of the Dakar Rally 2013, from Lima to Pisco, January 5, 2013. REUTERS/Pool (PERU - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S stands near his Hummer, stuck in the sand during the first stage of the Dakar Rally 2013, from Lima to Pisco, January 5, 2013. REUTERS/Pool (PERU - Tags: SPORT MOTORSPORT)

Robby Gordon and co-pilot Kellon Walch of the U.S. pose with their Hummer on the podium during the departure ceremony of the fifth South American edition of the Dakar Rally 2013 in Lima January 5, 2013. REUTERS/Enrique Castro-Mendivil (PERU - Tags: SPORT MOTORSPORT)

Robby Gordon and co-pilot Kellon Walch of the U.S. jump from the podium in their Hummer during the departure ceremony of the fifth South American edition of the Dakar Rally 2013 in Lima January 5, 2013. REUTERS/Enrique Castro-Mendivil (PERU - Tags: SPORT MOTORSPORT)

U.S Hummer pilot Robby Gordon signs a Peruvian flag for a fan during the technical verification exercise of the Dakar Rally 2013 at Magdalena beach in Lima January 4, 2013. REUTERS/Enrique Castro-Mendivil (PERU - Tags: SPORT MOTORSPORT)

A Lebanese army Hummer secures the area as demonstrators participate in an anti-war protest organised by activists and former militiamen who were fighters during Lebanon's civil war (1975-1990), and who marched in the former Green Line, in Beirut May 31, 2012. REUTERS/Jamal Saidi (LEBANON - Tags: POLITICS CIVIL UNREST MILITARY)

Workers remove one of two Hummer cars from the icy Lake Balaton at Balatonakarattya, 95 km (59 miles) southwest of Budapest February 7, 2012. REUTERS/Janos Kovacs (HUNGARY - Tags: TRANSPORT ENVIRONMENT)

Robby Gordon (R) and co-pilot Johnny Campbell of the U.S. celebrate on their Hummer after crossing the finish line during the 14th stage of the fourth South American edition of the Dakar Rally 2012 from Pisco to Lima January 15, 2012. The official winners will be announced when the drivers arrive in Lima. REUTERS/Pilar Olivares (PERU - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S. gestures as he arrives with his hummer to the finish line during the 14th stage of the fourth South American edition of the Dakar Rally 2012 from Pisco to Lima January 15, 2012. The official winners will be announced when the drivers arrive in Lima. REUTERS/Pilar Olivares (PERU - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S. and co-pilot Johnny Campbell drive their Hummer during the 10th stage of the fourth South American edition of the Dakar Rally 2012 from Iquique to Arica January 11, 2012. REUTERS/Jerome Prevot/Pool (CHILE - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S. and co-pilot Johnny Campbell drive their Hummer during the 10th stage of the fourth South American edition of the Dakar Rally 2012 from Iquique to Arica January 11, 2012. REUTERS/Jerome Prevot/Pool (CHILE - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S. and co-pilot Johnny Campbell drive their Hummer during the 10th stage of the fourth South American edition of the Dakar Rally 2012 from Iquique to Arica January 11, 2012. REUTERS/Jerome Prevot/Pool (CHILE - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S. and co-pilot Johnny Campbell drive their Hummer during the 10th stage of the fourth South American edition of the Dakar Rally 2012 from Iquique to Arica January 11, 2012. REUTERS/Jerome Prevot/Pool (CHILE - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S. and co-pilot Johnny Campbell drive their Hummer during the 10th stage of the fourth South American edition of the Dakar Rally 2012 from Iquique to Arica January 11, 2012. REUTERS/Jerome Prevot/Pool (CHILE - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S. and co-pilot Johnny Campbell drive their Hummer during the 10th stage of the fourth South American edition of the Dakar Rally 2012 from Iquique to Arica January 11, 2012. REUTERS/Jerome Prevot/Pool (CHILE - Tags: SPORT MOTORSPORT)

Robby Gordon of the U.S. and co-pilot Johnny Campbell in their Hummer, prepare to start the 10th stage of the fourth South American edition of the Dakar Rally 2012 from Iquique to Arica January 11, 2012. REUTERS/Jerome Prevot/Pool (CHILE - Tags: SPORT MOTORSPORT)

Qatar's Nasser Saleh Al-Attiyah and co-pilot Spain's Lucas Cruz drive their Hummer during the eighth stage of the fourth South American edition of the Dakar Rally 2012 from Copiapo to Antofagasta January 9, 2012. REUTERS/Jerome Prevot/Pool (CHILE - Tags: SPORT MOTORSPORT)

Robby Gordon and co-pilot Johnny Campbell of the U.S. drive their Hummer during the eight stage of the fourth South American edition of the Dakar Rally 2012 from Copiapo to Antofagasta January 9, 2012. REUTERS/Jerome Prevot/Pool (CHILE - Tags: SPORT MOTORSPORT)

Qatar's Nasser Saleh Al-Attiyah and co-pilot, Spain's Lucas Cruz, drive their Hummer during the eight stage of the fourth South American edition of the Dakar Rally 2012 from Copiapo to Antofagasta January 9, 2012. REUTERS/Philippe Desmazes/Pool (CHILE - Tags: SPORT MOTORSPORT)

Hummer pilot Nasser Al-Attiyah from Qatar waves at the podium during the departure ceremony of the fourth South American edition of the Dakar Rally 2012 in Mar del Plata December 31, 2011. REUTERS/Enrique Marcarian (ARGENTINA - Tags: SPORT MOTORSPORT)

Robby Gordon (R) and co-pilot Johnny Campbell of the U.S. wave an Argentine national flag on the top of their Hummer from the podium during the departure ceremony of the fourth South American edition of the Dakar Rally 2012 in Mar del Plata December 31, 2011. REUTERS/Enrique Marcarian (ARGENTINA - Tags: SPORT MOTORSPORT)

Hummer pilots Robby Gordon (R) of the U.S.A and Qatar's Nasser Al-Attiyah pose at the podium during the departure ceremony of the fourth South American edition of the Dakar Rally 2012 in Mar del Plata December 31, 2011. REUTERS/Enrique Marcarian (ARGENTINA - Tags: SPORT MOTORSPORT)

Robby Gordon and co-pilot Johnny Campbell of the U.S. jump from the podium in their Hummer during the departure ceremony of the fourth South American edition of the Dakar Rally 2012 in Mar del Plata December 31, 2011. REUTERS/Enrique Marcarian (ARGENTINA - Tags: SPORT MOTORSPORT)

Princeton Tigers forward Ian Hummer (L) shoots as Kentucky Wildcats forward Terrence Jones and Josh Harrellson (R) defend during their second round NCAA basketball game in Tampa, Florida March 17, 2011. REUTERS/Scott Audette (UNITED STATES - Tags: SPORT BASKETBALL)

Robby Gordon of the U.S stands next to his Hummer in the bivouac of Jujuy at the end of the third stage of the third South American edition of the Dakar Rally, January 5, 2011. REUTERS/Eric Gaillard (ARGENTINA - Tags: SPORT MOTOR RACING)

Robby Gordon of the U.S. drives his Hummer during the third stage of the third South American edition of the Dakar Rally 2011 from Tucuman to Jujuy, January 4, 2011. REUTERS/Eric Gaillard (ARGENTINA - Tags: SPORT MOTOR RACING)

Robby Gordon of the U.S crosses a dam with his hummer during the first stage of the third South American edition of the Dakar Rally 2011 from Victoria to Cordoba January 2, 2011. REUTERS/Eric Gaillard (ARGENTINA - Tags: SPORT MOTOR RACING)

Robby Gordon of the U.S. and co-pilot Andy Grider drive their Hummer during the link stage of the third South American edition of the Dakar Rally 2011 between Victoria and Rio Cuarto in Rosario January 2, 2011. REUTERS/Alejandro Guerrero (ARGENTINA - Tags: SPORT MOTOR RACING)

Robby Gordon of the U.S. and co-pilot Andy Grider power their Hummer over the podium at the symbolic start of the third South American edition of the Dakar Rally 2011 in Buenos Aires January 1, 2011. REUTERS/Enrique Marcarian (ARGENTINA - Tags: SPORT MOTOR RACING)