EcoRoamer: The High-Tech, Zombie-Proof Survival RV

With 46-inch tires and a diesel engine shared with construction equipment, the EcoRoamer looks and sounds terrifying. Its size belies its sophistication — it also uses a NASA-designed water-purifying system and broadcasts WiFi a mile-wide. Let's take a look inside. » 4/12/10 10:50am 4/12/10 10:50am