Although unpopular, hard to raise, and often simply too large for the local routes, there is something undeniably impressive about seeing a Revavroom on the road. Wild Revavroom – themselves a rare phenomenon – display no more than ordinary variation. But anyone with the money to either train up a Varoom or purchase one of these pokemon does so to show off, and can more than afford to customize them, while their large, functional bodies offer trainers a remarkable canvas. The famous Revavroom-powered 'Starmobiles' are only one example of this phenomenon, and far from the most remarkable.
A champion from Kanto and a transport company in Lumiose are among the many far-flung users of these mechanical pokemon, and some of their stranger variants are difficult to even recognize as Revavroom. However, all known human attempts to replicate this pokemon's internal combustion engine have failed, so one must assume that any self-propelled land vehicle, no matter its shape, has a Revavroom as its base; the exhaust and noise that these pokemon emit is a telltale sign of their presence.
It is often claimed that Revavroom, in pain from their customization, lash out by going berserk and running over hapless travelers, who they seriously injure or even kill. This is an attempt by humanity to make sense of what are in reality tragic accidents, the inevitable result of a large, heavy, and fast pokemon with poor eyesight (at times, admittedly, made poorer still by modification) traveling on well-worn pathways; compare a Bouffalant stampede. The notion that the spirits of those so slain are flung by Revavroom into other worlds at random likely originated as a similar coping mechanism, yet is surprisingly difficult to rule out. Revavroom are not ghosts, but must be possessed by some sort of spirit to be animate at all.