COMING: The hybrid camper trailer? “We’ve heard about range-extending trailers which could allow EVs to become range-extended plug-in hybrids, but how about this: a trailer with its own battery storage, regenerative braking and even electric-drive assist. That’s the idea behind German camper trailer firm Knaus Tabbert’s concept, on display this summer at Düsseldorf’s Caravan Salon. And besides adding hybrid capabilities to the car that happens to be towing the trailer, the trailer itself can use the energy gained through regenerative braking for its climate control, refrigerator, lights and more.”