Kevin Bullis, reporting for Technology Review:
Straubel says Tesla has been able to rapidly improve charging because it designs and builds all of the key components itself, including the chargers, the electronics for monitoring the battery pack, and a cooling system for the battery. They’re all optimized to work together in a way that’s not easy for systems built to accommodate many different models of electric vehicles.
Whole-widget design and engineering have come to the automotive industry.