Travco motorhomes, regarded as among the very best in the industry in contemporary reports and now considered a classic RV on par with Airstream, Avion, Silver Streak, Sportscoach and Spartan, were owned by both the famous and ordinary families. The country music star Johnny Cash owned and toured in several Travcos (many of which are included in documentaries and films about him) over the course of his career; William Shatner of "Star Trek" had a specially customized 1979 Travco with four wheel drive. Travco was considered a leader in the industry, and was the first manufacturer to create a vehicle that defined the modern day motorhome. Almost every feature regarded as typical of the class A motorhome originated with Travco and its Dodge Motor Home/Frank motorhome predecessors, from central air conditioning, to self-contained electricity generation, to a toilet ("Destroilet") that incinerated its own waste.