stuffty laws? Americans get whatever the forget they want. There are no laws against owning cars at 16, it's just expensive and we believe in working for our items, not being given them by our parents or guardian.
"Age 20" You act like a 12 year old. Anyway you can get Licenses in Australia at the age of 16. "Owning a car", peoples definitions of this is pretty different from each other, some people think Owning as in driving it all the time but still registered under their parents name is owning a car. I own my own car but its registered under my parents name because of the ridiculousness fee's inexperienced drivers have to pay.
If you get a car don't put a fartpipe on it.
This, you're a total forget tard if you do specially on a stuff car, if you have a sweet car you shouldn't need the stuffty noise making stuff pipe.
Also note on the OP, 2 years you'll get you dads old car the one he's been fixing. To me its gonna be very stuff or he really likes the old school car and I somehow doubt you'll get it. Also having an old car is really stuff, no A/C, chairs are very uncomfortable. If you really need a car to show of your ego you really are an idiot. Though that's only assuming that's the purpose of an old sounding muscle car as you described.