Energy efficient personal mobility is something that we all should be concerned with. We all need to get around and we all need to do our part to save the environment. That's why "Going Green" was such a huge theme at this year's Wired Magazine's NextFest. The Toyota booth took up nearly 1/4 of the show floor as they showed off multiple vehicles and even let attendees ride the I-Real. So, exactly how efficient are these futuristic rides? Watch this clip to find out and then check out this clip for more info on how you can help!