Today, the depreciation of capacity of a Lithium ion battery for automobile is quite significant. An improvement of the life time will definitely help the proliferation of an e-car or hybrid car in the world. The application area can be expanded to electric charge storage for solar like Gupta said. In addition to lasting and charging, size might be one of the factors that consumers would like to see improvement.
If the battery is really longer lasting and easier to charge, it can revolve the whole E-car market immediately. Right now, I don't think E-car can easily get into mass market in China (at least in China) as the long time wasted in charging is not solved and there is not good enough incentive for people to switch. The Government funding is just a political act while the Chinese will soon has new leadership next year, will they keep on emphasizing this 10-cities-1000-cars agenda?