A mechanic told the young man that his car was OK and that it just needed a few adjustments.
The young man stated that he knew it was a good used car when he bought it. "I use the Gunning Method!"
"Never heard that one", stated the mechanic.
"It's easy. I pick out a used car that looks good and after I buy it I try gunning the engine and see how fast she'll go. Then if it blows the motor or anything, I have it towed back to the salesman, and shoot him."