Speed Racer/Racer X versus the Boonta Eve Race...
Speed Racer and Racer X have found a way to travel to distant galaxies, seeking out racing challenges. Hearing of the Boonta Eve race, they land on Tattooine and, using parts from Watto's junkyard, enable their cars to achieve the same speed as the podracers.
Speed is driving the Mach 5, and Racer X is driving the Shooting Star, and each car has the modifications they had from the Casa Cristo Race.
Can Speed and X win? Bear in mind they will be working as a team, and Pops, Sparky, Trixie, Mom, Spritle and Chim Chim are there. Trixie will be flying overhead in her chopper, advising Speed and X.