We're in the midst of a quiet transportation revolution right now. Recent advances in electric motors and batteries have made electric cars a reality and they're getting cheaper and better every day. A lot of people have noticed this, but electric bicycles (eBikes) haven't gotten nearly as much attention. These machines are so efficient they can have lower emissions per mile than walking or pedaling a regular bike. Back to the Future II promised us hoverboards by 2015. Instead, we got eBikes that get over 1,000 MPGe and save us thousands more dollars than they cost. Maybe the future's not so bad?