Has multiple meanings
1) A spedracer is a loser whom goes to see the movie Speedracer by themselves.
2) A Blair Nissen
3) One whom is too incompetent to work at a fast food restraunt but still does. This person will still fuck up a basic burger they make 3000 times a day.
4) One whom mistakes driving good and driving like shit making the passangers fight unnecessary G-forces.
2)Tom: "Why did you go and see that Speedracer movie by yourself Blair Nissen?
3) Accelerating to a red light, taking corners in fourth gear, running over ducklings.