Can you add an unrelated person to your policy and let him drive your car or is it cheaper to buy him an old car and insure it in his name?

I would advise letting them purchase their own car and insurance. If something tragic happens the attorneys can and will come after you.

It is not that unusual in a tragic accident for the damages to exceed the insurance and then you are personally liable. If you do decide to go this way consider purchasing an umbrella insurance policy.

lwpat