Let's see: Lighter cars, higher operating voltage, special wheels, special control electronics... The article complains of the BART system supposedly being a m

Let's see: Lighter cars, higher operating voltage, special wheels, special control electronics... The article complains of the BART system supposedly being a maintenance problem today, but surely, due to the features I listed above, it must be more efficient than a classic rail system. Thus, many millions of USD must have been saved in energy consumption during the 40+ operating history of the system.