Two standard white limos -- the kind available for rental anywhere -- blown up as only Detonation Films can do it. Namely: in miniature, and extremely thoroughly! One side angle and one three-quarter front angle. Because keying smoke, sparks, and flame against green is very tricky, Bob has gone ahead and done that part for you. These are pre-keyed and ready to drop in.
Just in case you think you can do a better job of keying smoke than Bob can, the original greenscreen footage is also included with each package.