Visuals are incredibly impressive, and the idea of performing an operation on a car made of flesh is so unique and creative I love it!
As futur already mentioned, more feedback on player's action would be good. Half the time I am not sure if I am doing things correctly (for example, I am hearing clanking when I use hammer on an area but nothing changed, so I am not sure if I am supposed to do it multiple times, or am I just doing it wrong entirely)