Of course there will be exceptions as there to all generalities. Some 16 year kids might be ready to drive but most are not. In fact according to the experts the prefrontal cortex is the part of the brain that makes judgments is not fully developed at 16 and won't be till they are in their 20s. This causes them to take chances. They think they are invincible.
Partly true, partly hogwash.
Invincible does not equal stupid.
I tried quite a few things in the 16 to 25 year age range that I would not after that point, and have seen the same thing in my boys, It seems to be primaily a male thing, but I have seen girls do some things a little more maturing would have said no to. Depending upon your reactions to get you out of bad situation is a big part of this feeling of invincibility. However, collecting traffic tickets and driving in front of trains is not. Failing to understanding that there are consequences if your reactions do not save you is not. These things are simply applied stupidity. Who knows? Maybe this kid had not had to deal with the consequences of his own stupidity. There were two things I told my kids I would not do for them. 1. pay their traffic fines, and 2. make bail if they were arrested. For these things, you get to stew in your own juice. A night in jail can do a lot to help you wise up, hopefully before you have to become a long term resident of the gray hotel.