The Umonste, #507, a gasoline UrbanConcept competing for UMonster Team from Faculte Polytechnique de L’UMons, heads onto the track during competition day two of the Shell Eco-marathon Europe 2015 on Saturday, May 23, 2015, in Rotterdam, the Netherlands. (Photo by Patrick Post/AP Images for Shell)

The driver of the EnsitCarV2, #157, a diesel Prototype, competing for team EnsiTanger from Ensi Tanger, prepares to head onto the track during competition day two of the Shell Eco-marathon Europe 2015 on Saturday, May 23, 2015, in Rotterdam, the Netherlands. (Photo by Ermindo Armino/AP Images for Shell)

The driver of the DTU Dynamo #501, an ethanol UrbanConcept, competing for team DTU Roadrunners from Technical University of Denmark, waits on the start line during competition day two of the Shell Eco-marathon Europe 2015 on Saturday, May 23, 2015, in Rotterdam, the Netherlands. (Photo by Patrick Post/AP Images for Shell)

The Carbonizer, #710, a battery electric UrbanConcept competing for team Niepce from Lycee Nicephore Niepce, prepares to enter the track during competition day two of the Shell Eco-marathon Europe 2015 on Saturday, May 23, 2015, in Rotterdam, the Netherlands. (Photo by Patrick Post/AP Images for Shell)

The Eco-M5, #131, The Evolution, #19, and The E-volution, #319, seen on the track during competition day two of the Shell Eco-marathon Europe 2015 in Rotterdam, Netherlands, Saturday, May 23, 2015. (Photo by Patrick Post/AP Images for Shell)

Crew members work during a pit stop for driver Austin Dillon's car during the NASCAR Xfinity series auto race at Charlotte Motor Speedway in Concord, N.C., Saturday, May 23, 2015. (Photo by Terry Renna/AP Photo)

Flames shoot from Jamie Dick's car after he hit the wall during the NASCAR Xfinity series auto race at Charlotte Motor Speedway in Concord, N.C., on Saturday, May 23, 2015. (Photo by Chris Keane/AP Photo)

Jamie Dick (55) loses an engine as smoke pours from his car in Turn 2 during the NASCAR Xfinity series auto race at Charlotte Motor Speedway in Concord, N.C., Saturday, May 23, 2015. (Photo by Gerry Broome/AP Photo)

Funny Car driver Chad Head races down the track during the NHRA Kansas Nationals, Saturday, May 23, 2015, at Heartland Park in Topeka, Kan. (Photo by Chris Neal/The Topeka Capital-Journal via AP Photo)

A cloud of black smoke billows out the exhaust pipe of John Robertson's diesel dragster as he runs down the track during the 2015 NHRA Kansas Nationals, Friday, May 22, 2015, at Heartland Park in Topeka, Kan. (Photo by Chris Neal/The Topeka Capital-Journal via AP Photo)

Courtney Force races down the track in her Funny Car during the night session of the 2015 NHRA Kansas Nationals, Friday May 22, 2015, at Heartland Park in Topeka, Kan. (Photo by Chris Neal/The Topeka Capital-Journal via AP Photo)

Pro Stock driver Greg Anderson goes through his burn out prior to making his second run of the day during the 2015 NHRA Kansas Nationals, Friday May 22, 2015, at Heartland Park in Topeka, Kan. (Photo by Chris Neal/The Topeka Capital-Journal via AP Photo)

Funny Car driver John Force tears down the track during the second run of the 2015 NHRA Kansas Nationals, Friday May 22, 2015, at Heartland Park in Topeka, Kan. (Photo by Chris Neal/The Topeka Capital-Journal via AP Photo)

Erica Enders takes off from the starting line during her second run in Pro Stock on Friday May 22, 2015, during the NHRA Kansas Nationals drag races at Heartland Park in Topeka, Kan. Enders took the top qualifying spot while breaking track records in both time, 6.515 seconds, and speed, 211.43 mph. (Photo by Chris Neal/The Topeka Capital-Journal via AP Photo)

Chad Head takes his Funny Car through its burnout before the second run of the 2015 NHRA Kansas Nationals, Friday May 22, 2015, at Heartland Park in Topeka, Kan. (Photo by Chris Neal/The Topeka Capital-Journal via AP Photo)

Antron Brown does a burnout during a Top Fuel session at NHRA Kansas Nationals drag races Friday May 22, 2015, at Heartland Park in Topeka, Kan. Brown finished the day as the top qualifier. (Photo by Chris Neal/The Topeka Capital-Journal via AP Photo)