we blasted the bottom of our trackday xr4i in the shed, just made a tent from cloth and foil to prevent most of the dust, but it gave an awfull mess! better to load your car on a trailer and bring it back, if you do it outside your next door fellows wont be amused, youll find red paint chips and media from blasting litterally everywhere, and your probs need to vacuum outside to get rid of all the crap!