First you have to go to "hot wheels cup". Win it with rock buster. If you dont have him then go to "Road to Rustwell"(exhibition race) and there is a jump that you can go on.
Go behind it. There will be two buildings. Go behind them and ram into the back. Thats how you get "rock buster". As I was saying, when you win it with that car you will get like 6 other cars and 3 more tracks.
Go onto "test track" and in that red room go against the wall and there will be a couple openings that you will have to break. One of them will have "Hot Wheels 500" in it.
Added by: Hot Wheels Masterj , ID#4527