Rental Car

He meant intensive purposes, as in purposes marked by intensity, e.g. intense meaning extreme degrees of cool/danger/fun. I think the last panel is meant to be them flying through the air in the car, so the intensive purpose the renter had in mind is to drive extremely fast and jump it extremely high.

Just a guess, but that's my feeling on it.

I think that's the intended intensive purpose.

It's a rental for all intents and purposes because they ain't gonna have to pay for it.