8-Ball wants to solve a problem with an unhappy client... He's rigged a car with a bomb and you need to deliver it to him without blowing yourself up in the process. The car has a damage meter and if you do too much damage you'll blow it up. Not good.
Carefully Does It
Make your way to the target slowly and carefully. There's no timer on the mission, so just go slow and try not to crash too many times. You can take a few bumps but not too many.
Once you reach the target, he'll give you the money for 8-Ball and tell you if he's late again, he'll slit his throat.