I'm just going through this at the moment, we already have 2 bike's which have done sterling service, the amount of stuff you can carry is amazing but advancing years are making us think.
Tried a Segway but they're heavy to lift on and off and there's no suspension, fine if your in your first flush of youth.
Electric bike's are heavy and both them and a Segway raise the question of, how do you charge them ?
By the way when we visited Richard in Waterford we didn't see a bike so he may have left it behind.
The most practical for us that I've seen was this aluminium framed bike with a small motor http://wwwengine-1.com.tw try as I might I've not been able to get in contact with them, maybe some of you IT techie guys can raise them, or maybe you have a contact in that region, if so I'd be very interested in buying a couple as they have the benefit of light weight loading/offloading, no charging problems, unlimited mileage and the carrying capacity of a bike.
Any help welcome.