Re: alternative energy
Well there are spin generators, also solar chargers for cell phones. I saw one charger that is a battery pack but uses solar to extend the life of the charge stored in the battery. Items such as these make many things possible with smart phone and bicycle cell phone holders. Build a simple bridge and a spin generator could also put charge back into a battery pack. Then you'll never have to worry about your smart dying on you while you're riding.
Land Rider Jerry