Your concerns are warranted, but not for the tires - the stress is really on the suspension joints. It's never good on a car's steering mechanisms to turn the steering wheel while the car is not rolling. Kids do this all the time in golf carts, and soon the steering wheel has 6 inches of "loose play" due to wear in the tie rod ends, etc. Granted, a golf cart is built nowhere near the level of a car, but the reasoning is the same. It WILL wear on your steering components if the steering wheel is constantly turned while the car is not moving. Just turn the steering wheel one day while the car is motionless, and then roll forward slightly while still turning the steering wheel - the amount of pressure you need to exert is greatly reduced when the car starts barely moving. All of pressure you feel before the car moves is being delivered to the steering components.
Hopefully Tesla will release a game steering wheel that mounts to the real steering wheel. Though a little more cumbersome, it would definitely be much better for the car.
As much as I like the new game, I will refuse to play it based on it causing wear-and-tear on the car.
I really hope they add a way to play it without causing the power steering to move the actual wheels.
Along with everything else it is going to look 'dorky' to be sitting at the Supercharging station with your front tires turning back and forth.
Also, how much energy are you using to play the game if it keeps having to move the steering rack with your game play? Sigh.
I have an xbox controller on USB in the car, and found that it doesn't appear to work on the new game, but works on the old Atari games.