Thanks, BUT...I did NOT do the entire car. I only did interior of doors and c-pillar pieces, engine comparment, the door jambs and trunk jamb and bottom of rockers and quarter panels. Then I buffed the entire car.
Still a large area to be using one on, especially, as you said, it's primarily for small parts and touch up. I really don't see the engine compartment and it's associated parts as small. :-D
But what I said, still stands. It's more about your determination and skill to do it and have it turn out well.