According to Smith, the TX4E will contain all the conventional features of the TX4, but will be powered by Smith's advanced electric drive train and a lithium-ion iron phosphate battery pack. It will be manufactured in the UK for the domestic market (so no chance to buy it abroad) and sold through LTI's distribution network. Smith says that, based on current electricity prices, the vehicle will cost less than 4p per mile to run - which is far better than the diesel versions. The last time I checked diesel in the UK it was more than a pound per liter, and the TX4 needs about 10-12 liters/100 km (20-ish mpg U. S.) to run in urban traffic.
[Source: Smith Electic Vehicles]