Electric bikes have come a long way. It used to be that everyone knew you were riding one - there'd be this clunky thing attached to the frame (the motor).
However, these days, the most sophisticated bikes look just like.. bikes. The motor - or the powerplant, anyway! is concealed within the frame of the bike, and the batteries that power it are tastefully hidden in an over the wheel pannier, for example.
An electric bike is not just for "lazy" bikers. You still have to pedal! It's when you come to some daunting hill, you need fear it no more. Start pedaling, and the motor will help you out.
And should the battery die on you (as current batteries do at about the 70 mile mark) you can still pedal yourself home.
There's a website that discusses all the new electric bikes, scooters and (soon to come) motorcycles on the market. Whatever you think about the green movement, electric bikes make a lot of sense.
Read up on 'em.