Smallville: Season 3, Episode 13

3 - 13: Velocity

After Pete purposely blows a street race, the thugs that run it threaten his life, so he asks Clark to use his powers to stop them. Furious that Pete would put himself in this position, Clark must figure out a way to save Pete and still protect his secret. Meanwhile, Jonathan begins to suffer the consequences of his deal with Jor-El and Lex discovers that Adam's doctor is treating him with a dangerous experimental drug...