Ford explorer question please answer?

[Joe]

my family owns 2 cars, a 2006 pontiac g6 that my mom owns and a 2002 ford explorer my step dad owns. I was recently talking to them about what i want to do for a car, and they decided i could have the ford explorer and my step dad would buy a cheaper car for himself. all i have to do is pay for my insurance and gas for the car, they are still paying for it, like any problems (unless i cause them), and the monthly payment (i may have to pitch in a little but not a lot). I do work but i am unsure if i should take this deal or get my own car, so i need you peoples' advice. Thanks