When they open the door to climb inside, a voice greets them over the automobile’s sound system. A design by architect Javier Ponce of Forward Thinking Architecture exhibits a 24m-tall, three-tiered construction with solar panels on top to offer power. The center tier grows a selection of veg over an space of 51,000m2, using not soil but nutrients in liquid. These vitamins and plant matter would drop into the bottom layer to feed fish, which are farmed in an enclosed space.