Body-on-frame vehicles are becoming increasingly rare in the modern automotive landscape. The weight savings supplied by a monocoque chassis design have meant that framed cars basically only exist today in the world of pickup trucks and large SUVs. However, they do offer one huge advantage over unibodies – if necessary, the platform can be detached and replaced underneath the vehicle.The video below compresses the chassis replacement of a 2004 Land Rover Discovery Series ll at J. White's Automotive in Framingham, MA, from a weekend down to four minutes of time-lapse footage. If the lot outside the workshop is any indication, these folks know a lot about working on Land Rover products, and they make this job look like a breeze.If you dig seeing how cars work, then the whole process is a wonder to behold, especially once the chassis gets separated from the body. Amazingly, it looks like just two guys do most of the labor on the project. Scroll down to watch the whole operation from beginning to end.