Powerhouse Coach builds one of the greenest RVs on the planet, and the very first and the very latest in 5th wheel technology rolls out. Colorado has the toughest Unimog, and $2.4 million buys chic style from Featherlite Vantare.Powerhouse Coach builds one of the greenest RVs on the planet, and the very first and the very latest in 5th wheel technology rolls out. Colorado has the toughest Unimog, and $2.4 million buys chic style from Featherlite Vantare.