THIS IS NOT A CHEAT ONLY A HINT!!!!!

Once you have unlocked the HUMMER H2 SUV(I HAVEN'T TRIED THIS A FRIEND TOLD ME)Put as many cop's on as you like and go very fast and they will be way behind you. In D.C's Police station's roof,there's a paint can and it will be blue HUMMER with 3 Yellow crown's on each side of the HUMMER.