After years of waiting, North America has finally gotten the 4 4 version of the Mercedes Sprinter van, which is quickly gaining popularity amongst camper van converters. Gizmag reported that Winnebago Industries Inc. has rolled out a more highway-friendly 4WD Sprinter camper called the Era 4 4. Winnebago may be best known for its large, bus-sized RVs, but it has also been offering Class B motorhomes for decades.