The HybriDrive propulsion system is available on the DaimlerChrysler Orion VII hybrid transit bus. More than 1,000 buses with HybriDrive propulsion system are in service or on order. The next-generation HybriDrive system featuring lithium-ion energy storage will be available for commercial buses beginning in 2008.

The BAE deal marks the first announced commercial application of A123Systems Li-ion technology in series production hybrid vehicles. A123Systems is currently working with GM and other automakers on battery packs for future hybrid (earlier post) and plug-in hybrid (earlier post) vehicles.