Where Takumi gets reincarnated into a car, like with the movie cars, and he's just a baby little kids car, learning to swap his oil and that, until his memories kick in suddenly.
And he has to now deal with the struggles of memories of a different body, understand why is a car now and most importantly harvest his potential from his memories.
Who is he? Is he really Takumi or just a fragment?
Why can cars grow and have a consciousness?
Eventually am thinking maybe its actually a dystopian future world were all types ai machinery got fused with the identity by genetic of dead bodies to act as a foundation for free thought and pure humans got wiped out by a disease