read this article. battery tech coming out in the next 4 years. electric cars should be a reality by 2015. interesting times we are living in.http://www.greencarcongress.com/2009/12 ... .html#more
Erm, not to go too Off Topic (and I'll bring it back to the Di2 issue) - but electricity is NOT an energy source. It is a type of energy.
At this time, where does the majority of your electricity come from?
Petroleum powered (or built) plants.
Although it will be better to have a world where vehicular transportation does not emit toxic fumes and harm out environment, we will still have a issue with power. Solar and Wind power are the only possible, minimally petroleum-using-in-process, systems of energy gain. However, even those have issues (we can take this discussion into PM if you want. Or just watch the film "Collapse" as a break down of the concept)
Anyway, back on topic - as I talked with the friend of mine who is a Shimano tech rep, we both agreed that the next true step for electronic drivetrains would to have a system that powers the drivetrain's shifting mechanisms without the need for a large battery. Technology needs to be developed to efficiently utilize the energy we (humans) are expending while on the bike in the first place. You don't shift that often, hence you really don't need that much energy put towards the drivetrain constantly. ... that is what needs to be developed.
And Weight Weenies will then be quite happy, no?
|| Other projects in the works.