I have the slight idea how but i don't entirely know does anybody know how? https://scratch.mit.edu/projects/250769181/

There are many options. You could use pre-rendered sprites created in a 3D modelling program, as well as a pre-rendered environment, and then proceed to add programming designed to make the pre-rendered objects move in unison, but this would have to account for every possible action in the program.

One of the most popular methods would be creating a pen-based 3D raycaster, however, this is quite complicated, and I've personally never been able to get one of these working.

If you want to learn more the Scratch Wiki has a good amount of information on the matter.

Thanks,
Superben100.

my dads car has a 3d engine