This technology looks serious and is well advanced. From the Toshiba website:
Toshiba's SCiB™ Rechargeable Battery
SCiB™ uses lithium titanium oxide (LTO) in its anode to achieve excellent characteristics, including safety, long life, low-temperature performance, rapid charging, high input/output power and large effective capacity.
SCiB™ has been widely used for vehicle, industrial and infrastructure applications, including automobiles, buses, railroad cars, elevators and power plants.