Not much getting around it, teenagers are just a statistical nightmare in terms of auto accidents. When I turned 17 and got my license I immediately had to surrender it because my parents could not afford the increase in their auto insurance premium. It sucked but I myself couldn't to pay the premiums and I didn't even have a car, it was just because they had to list me a licensed driver in the household.
A year later I saved for a car and was able to get my own insurance.
I wish my parents would have given me the heads up then I wouldn't have been so excited to get my license in the first place, but I don't think they knew. Which is weird because my brother got a license and a new car to boot. I will definitely set the expectations for my kids earlier, however I am really hoping by the time they are of age to get licenses, it won't be seen as a significant right of passage into independence with car sharing and self-driving cars.