Hey, thanks for writing up such a detailed post of your thoughts! The demo has now been updated to v1.2 which should address a couple of your points. I've posted a devlog with the bug fixes/quality of life improvements made in this update.
I'm afraid driving on the righthand side of the car is here to stay though, it's a game set in Wales after all! Just think of it as an extra element of weirdness to add the game's tone :]