Considering how much less power is required than for a car, and how electrification of bicycles has been going on for some time now, it's perhaps a little surprising that electric motorcycles are not a bigger deal than they are already. And if there's one motorcycle manufacturer many people would have put at the bottom of a list of ones likely to introduce an electric motorbike, it would probably be Harley-Davidson. However, it has been revealed that the legendary American motorcycle company is to put its first electric model into production in as little as 18 months.