" I recommend instead of you teaching your son to drive, that he take a drivers ed course from school. "
It may be different in your neck of the woods, Bing, but in my state, only a few public schools still provide Behind-the-Wheel Driver Ed. Budget cuts have forced the elimination of several programs over the years, and these classes went to the chopping block in most NJ schools over a decade ago. As a result, private driver training schools are flourishing, so the OP should consider this route if his local schools have also opted out of driver ed.
"my dad simply made him pay for the repairs"
My Dad made me pay for a new hood, fenders, & grill on his '63 Plymouth, and it did indeed make me a much more careful driver.
"More often then not, new drivers are emulating what they see from you or someone else. Make sure he only sees the right things being done behind the wheel."
If the OP does rolling stops, or fails to turn on his headlights, and slow down when it is raining, or fails to yield to other cars, or does any other illegal and potentially dangerous things behind the wheel, this attitude will be contagious. Just as kids who see their parents smoke are more likely to smoke, and kids who see their parents gamble are more likely to become gamblers themselves, kids who observe parents violating traffic laws are more likely to become violators themselves.