Why not a small trailer with battery packs for long trips? or if you don´t want-need to go green, it could go with an engine and a generator. You connect it to

Why not a small trailer with battery packs for long trips? or if you don´t want-need to go green, it could go with an engine and a generator. You connect it to your car and that way you can add range in an easy way. It´s also fast to swap at the e-station, just 2 min...