RV builders create a track-side mobile mansion for auto racing driver Helio Castroneves. Plus. a surfing enthusiast transforms a retired double-decker school bus.

RV builders create a high-tech, opulent masterpiece for a couple with a passion for flash. Next, they work on an expandable trailer with panoramic views.

RV builders create a spacious and exquisite residential home on wheels. Plus, there's a hand-built party trailer and a converted vintage bus.