How do you destroy a vehicle?

And how do you pick up a part?

Get a wrench from the MTS core creative menu.

You can destroy a vehicle by holding shift, and left clicking a vehicle.

Likewise, you can simply left click a part (wheel, seat, engine) without holding shift to remove a part.

edit: don invalidated this ticket while i typed, wowie

For future reference and questions, it may be advised to read the ingame manual. @cgiigc