We specialize in building your ultimate escape. Superior workmanship: custom-built by hand, with every detail unique to the individual customer. We start with the cargo or crew van as a blank canvas, transforming it into your custom adventure vehicle. Ozark Mountain Adventure Vans – the new kids on the block? Not exactly. Springfield Coach Group (SCG), the parent company of Ozark Mountain Adventure Vans (OMAV) has been building limousines, party busses, Ford Transit, Dodge Pro-master, and custom Sprinters for the last 30 years.