Thieves turning good guys Interest check
Sounds like most Shadowrun campaigns, really. Many of them are teams of mercenaries who try to pick their jobs so that they help the downtrodden. They tend to call it "Hooding" as a Robin Hood reference. It can include helping the poor and/or disadvantaged, or ecoterrorism, or simply bringing a faceless megacorporation down a peg.
And if you want the street racer concept, well there's a whole character archetype that's tailored for it. Plus a sourcebook packed with vehicles and customization options.