Probably someone saw him in the car with the others on the way to kill Ricky's killers; even Furious couldn't reliably say Trey didn't take part in it since he ran off in defiance of his wishes.
shareIt's all about the prosecution and who is will to testify. Jason could have turned his son in, if he felt so morally bankrupt if he did not. But that is not the way the world works. A likely event is that the assailants would have gotten away, as testified in the movie. Doughboy searching the television stations for word of his brother's death. No mention, I recall, of the drive by assassination. Likely, the none of the gang members would have testified against each other.
shareIf the gangsters testified that he got out of the car he would get off.
shareIn this setting, the film supposes that the LA County legal system wouldn't value the life of a "young black thug" enough to spend any resources on finding the killer of Ferris and his friends...it's more of the "they'll all kill eachother eventually, why waste the tax money??"
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