By Alex Lauer Last week was a big one for the RV world. Winnebago, the first name in recreational vehicles, announced the e-RV, an all-electric motorhome with all the fixings and 125 miles of range, and Airstream, the first name in travel trailers, announced the eStream, a classically designed silver bullet with an electric drivetrain to make it easier to tow with EVs. (Their parent company Thor Industries also announced their own electric RV, the Thor Vision Vehicle, with a targeted range of 300 miles.) The future of zero-emissions American road-tripping seemed to be arriving. Unfortunately, …