I think im gonna borrow my parents car in the winter. They have a toyota sequoia and a toyota seinna. If i do get a 370z i would take care of it always and im gonna be keeping that car till im like 30 although its not a family car hahah

How are they going to respond to that considering they just helped you buy a car?

This works until you leave for college. Then what? A spare set of wheels with snow tires in a dorm room? Anything can be done, but you need to think a little longer term than the next two years.