I'd love the Idea of the model for the BTTF Delorean, but the scripts your asking for would kill it for me. To be honest, I really have no interest in using the Fuel mod. And the kinds of doors that work you're talking about work while sitting in the car, and pressing Spacebar. So, it's doors, or brakes. Or you could have it scripted to make the Light Key to open doors and still have brakes. Still foggy on the use of the Light Key for vehicles.
And I say, forget making it actually time travel. Just make it lay temporary projectiles sort of like the Molotov roostertail from the tires. Then I'd be happy.