First off I'm not asking for a code just a method of doing this. Is it possible to filter which blocks a block collides with, similar to how you filter which blocks and ray can pass? I have no idea where to start with this. Basically I want to make it so that players can drive around in vehicles (obviously you need it to collide with the ground, walls, etc.), but I do not want them to collide with other players and their vehicles. I tried doing some research on google but I couldn't find anything.
I don't think you can, no.
CanCollide is the only way to turn off collisions as far as I'm aware, and that's a very simple true/false value, no filter.
Sorry