ModVans claims you can’t get more power from an RV in its class and that it’s enough juice to keep you adventuring in the all-wheel-drive van for weeks at a time without having to recharge.

Motorhomes based on Mercedes-Benz Sprinter vans, M-B Cruiser delivered high fuel mileage alongside self-contained recreational vehicle comfort. The 22.5-foot long Class B products of M-B Cruiser were ...