You probably shouldn't just get in a new car and drive it, but people do. I remember at a hire car place once the team I worked with were given an automatic, the guy driving has never driven an automatic transmission before, but his license authorises it (UK licenses allow everybody to drive an automatic, but you need to test in a manual to drive manual), and so they just lent him a car with a completely different driving style. He had to get them to show him how to even drive it away out of their car park.
I learned in the small car from the same brand as my father's larger car, so that the controls are in the same place, the symbols on stuff are identical, all that was different once I have a license and borrow dad's car is it's longer and has more power.
It also probably shouldn't be legal for me to drive today, but it is. I learned 25 years ago, and I haven't driven anything in over a decade, so a rational system would say nah, you're too rusty, get a refresher course, but there's no mandate for that.
It is kind of mind-boggling insane that you can be 25 years or (younger in some states/places), having only ever driven a smart car (so you have your license) and you can walk into U-Haul and rent a 26 foot box truck with a trailer, and the most they do is tell you not to go under low overpasses or into drive-thrus.
I learned in the small car from the same brand as my father's larger car, so that the controls are in the same place, the symbols on stuff are identical, all that was different once I have a license and borrow dad's car is it's longer and has more power.
It also probably shouldn't be legal for me to drive today, but it is. I learned 25 years ago, and I haven't driven anything in over a decade, so a rational system would say nah, you're too rusty, get a refresher course, but there's no mandate for that.