Flounder,
Did you title your car in your state yet? If not, might I make a teansy suggestion - Go Do It NOW!
Here's why I'm saying this....
Bob's stating that Zak is underage and can't honor contracts to TAWidow. Zak's name appears on your title. Now, let's say that Bob being the devious underhanded person that he is, contacts his DMV to say that the title you hold is null & void because a minor signed it over under duress. Now you're locked in a title fight with this yahoo over your car.