Agree wrt battery swapping.. there's no consensus among manufacturers, even with very similar design goals eg Brammo and Zero .. and unless everyone throws their weight behind One Standard Battery Format, then the entire thing is non-viable.
I wish A Better Place all the luck in the world.. battery swaps definitely solve the range issue, providing a swap station is nearby .. but the logistics seem unfavorable. Maybe it could work in an idealized top-down managed society (or company, for example), but unlikely to be a viable solution in the real world.
A flow battery with an electrolyte fluid might work better, as the flow fluid should be usable regardless of size or voltage of the battery. MIT's Cambridge Crude is supposed to have a prototype in 2013. We'll see how well this works.. but it has promise. It would also solve the sudden grid impact of fast charging stations, and the crude storage pools could even be used as grid buffer, where cheap base load power is stored overnight and then discharged during the day to avoid turning on the expensive natural gas and diesel power plants.
One thing that I think could work would be linkable energy units, either additional batteries or a generator unit: gas genset, fuel cell, etc. Some type of very efficient programmable DC/DC converter would allow you to have a common format for the energy units, if you could rent them from a store. Terry is experimenting with the linking bit with his LiFePO4 addon pack .. saddlebag batteries are often brought up as one particular solution.
esbk.co interviewed Kenyon Kluge of Zero
back in october. The interview was quite long and insightful, one relevant bit is that Zero has designed the swappable modules on the 2013 FX / MX / XU bikes so that the battery modules will coordinate power draw based upon differing SOC points.. so there's no need to carefully match the modules. This is
HUGE for facility type operations where they could have a pool of modules charging, and individuals could swing by and exchange modules with near-zero chance for configuration error. Seems ideal for law enforcement operations, or small delivery type services. Kenyon Kluge also mentioned that the module is designed independently of the interior battery chemistry.. so expect to see these modules reused at least for a couple of years.. and perhaps an upgrade option for 2013 owners. Maybe.