I read a book about a mouse with a motorcycle (https://www.goodreads.com/en/book/show/232109.The_Mouse_and_...) and a different book about a mouse-like child with sailboat. (https://www.goodreads.com/en/book/show/138959.Stuart_Little).

M. Night Shyamalan wrote a screenplay about the latter book, and it was made into a popular movie.

This one?

https://youtube.com/shorts/E74r-ybeQfE

Someone needs to put an octopus in a mini vehicle.

That's the one. I used a bit of creative freedom when describing a mouse with an EV sports car; it was a rat and an EV taxi.

Close enough