No1 is gonna pay some thug to "promote" their company in the fuckin' hood. LOL. The cars that get PAID to promote are wrapped, not painted. Also there are VERY strict rules... like car can't be over 2 years old - etc. (new beetles, mini coopers, scion XBs, etc). No1 is gonna pay a bubble caprice to promote BOA in a neighborhood where 1) there IS no BOA and 2) the people that live there can't get a bank account. Use your head people... it's a fad. Nothing more, I can't see any1 getting Royalties from General Mills for Apple Jacks logo.
When a sponsored car for a multi-million dollar company is done... it hits the show circuit - CES, SEMA, MAJOR events... not AutoZone local car show. Those cars are never driven by they owner --- those cars become slaves and per the contract have to make so many NATIONAL shows a year... the car lives in a trailer and is paraded around the country... often w/ the owner no where arounf. They are ALSO done by MAJOR designers/shops -- not "some1 you know around the corner".