You seem to confuse improvement with innovation.
The AC induction motor as used in pre model 3 is technology dating back to 1887 and was invented by Nikola Tesla
As it is extremely inefficient to take DC power source (battery) run it through a inverter to power AC motor, from model 3 onward the older tech DC motor is used.
Half a mile queue and hours of waiting to get free spot and then hours of charging   https://youtu.be/UqEwLle8xKU

As for the electric car, in crypto term you would call it an "altcoin"