We purchased a van while on Holiday in Europe. We were on a tight timeline to get the van, fit it out and drive from Eastern Europe (Latvia) to Western Europe (Spain) and back in 3 months. 

We got the van and 3D scanned the interior. While it was at the mechainic's being serviced, we designed and had a CNC fabrication company cut out the components. Stripout, wall insulation and lining, flooring and installation of cabinets done in 5 days. Some of the plumbing and electrical work took a little longer and was completed while we were travelling.