I got mine at 15 too

and heres a hint... suppose I drive 40 and it takes me an hour to get home (it takes 45 min to an hour for me to get home depending on traffic). so 40 miles. now suppose I was doing 60. going 40 miles only takes me 40 minutes to get home. I saved 20 minutes. I have done the math and it saves me a good ammount. cause of how much time I'm in my car. I'm usually in it on average 2 and a half to 3 hours every day.

it takes 2/3 the time