It talks about Florida ! When I spend a bit of time there, I saw more backing up from grocery store parking lot fender benders than any other state that I had been in. I think I saw at least 10 maybe more in a very short span. And yes it was older drivers that were mostly doing it. On a particular busy street near me I have seen a few vehicle flip overs on to their sides, and in those cases it was younger drivers. So you can't blame it all on the age of the driver. Driving is a skill level thing, you either have it or you don't, I'd say about 90 plus percent people driving do not have the skill level. Driver training is not done correctly, it should start on a race track learning how to control the vehicle in turns and slippery conditions, then advance to normal grand ma driving on the normal roads.
Age of the vehicle and safe? The main problem is lack of the correct safety features like the race proven devices that protect those drivers, number one being a roll cage crash structure, and proper seat belting. As a note there are no airbags in race cars and drivers constantly walk away from 100 plus miles per hour crashes.