Thanks in part to the inherent awesomeness of the word itself, it seems everyone is talking about ultracapacitors. Ultracapacitors store energy in an electrical field between two plates. They can charge faster than batteries, emit powerful pulses of electricity, and last almost indefinitely. Several companies make them, but the most hyped by far is EEStor. EEStor's ultracapacitors are set to power the ZENN City Car, an electric car with a 250-mile range that's supposed to arrive next year.