Ignoring the fact that the driver looks like he needs a companion, the Ecco concept car is one spiffy way to enjoy the outdoors. The designers, Nau, call it a “zero-emissions mobile living solution.” The aerodynamic shape and solar power provide the green factor.

When Ecco is parked in lurve machine mode, a PV cell-studded “membrane roof” folds out like an accordion, sucking up additional solar power. The membrane roof also replicates the function of a camper pop-top, expanding to accommodate a sleeping loft. The rest of the interior manages to squeeze a kitchen, a living area, a toilet and shower, and an extra bed into a space only 8 feet wide and 15 feet long.