I just watch it on TV, but I'd say open floor space of triple the size of the vehicle. Add in 20% for tools and junk.
That's about 400sf so you should be good. Until the Missy's wants to store stuff there. Lol
The truth is you're the weak. And I'm the tyranny of evil men. But I'm tryin', Ringo. I'm tryin' real hard to be the shepherd.