insurance companies generally require people to list additional drivers of the vehicles, thus unavoidably raising the rates. i let a buddy take over payments and use my chevy blazer for a couple of months, and when i added him to my list of drivers my insurance rate quadrupled because of his driving record. if you fail to mention additional drivers - it can cause some major legal hassles, especially if there ever was an accident.
insurance rates are higher for "high risk" drivers for a reason. is it fair? no. is it realistic and warranted? yes. insurance companies crunch numbers and statistics constantly, and the higher rates are there for a reason.
people like classic muscle cars for a reason: they're powerful and go fast at the drop of a hat. put that kind of lead under a young semi-experienced driver's foot, and the rest speaks for itself. i'm speaking from personal experience too; a friend of mine threw a big V8 in a little car, and at a party i had had a couple of shots. next thing i know i'm being handed the keys and told some people want a ride home. i thought i was fine to drive. well my friend wanted to impress the passengers, so he told me to go faster, show them what the car can do. next thing i know we're going over 100mph, and a curve came up suddenly in the road. we were lucky - i only flattened all 4 tires, mutilated the rims, and twisted the transmission. we stopped 2 inches away from another car in a convenience store parking lot, after going over 4 curbs, some bushes, between 2 signs...
that night could have gone a whole lot worse! i was 18 when this happened. of course the police showed up, i was arrested for drunk driving, got to spend the night in jail, and lost my license for 60 days.