The age group of people who are now driving their own cars are getting younger, my niece started driving when he was 14 and got his permit on his 16th birthday and has been driving for the family ever since. In most cases, especially with boys, they have been exposed to driving just by playing games on different consoles at home while some just loves to observe their dads while driving all the time.
This is also why there are a lot of young men and women who are asking for a used car as a present from their parents especially on graduation, which the parents may do so provided they have enough savings to spend on the car.
One of the most important thing to consider though, when you are about to buy a second hand car is getting a free vin check to make sure that car is safe and well maintained by the previous owner. This information, together with all other important records can be seen on a vehicle history report that you can get online. There are currently a lot of these services on the internet while the price may vary from one company to another.