If I want to strip my car to the metal..... what do you recommend?

media blasting will work could also use aircraft grade paint remover or sand it down there are many ways to do it all are messy some worse than others .
i media blasted a buddies car in his garage before i did it i built a enclosure out of 1x2 boards i had laying around and a roll of plastic that did pretty good at keeping the mess to one area and if i ran out of media i just grabbed a broom and swept the floor and put it all back in the bucket