In addition to doing everything regular campers do, the trailers, still in development, also act as backup charging stations (by housing battery banks in the trailer' chassis) for the electric tow ...

LISEN says a quick 30-minute charge can get you up to 90% battery life ... the LISEN 4-in-1 Retractable Car Charger on sale for just $19.99 here. More from Rolling Stone ...