I guess you'll also want to note that BART later had to refit all those cars with better ventilation because the $1000 saved was false economy. The trains were always hot and smelled bad, especially when they were hauling 420k passengers per day, which was triple the design capacity of the system. The new cars have much better HVAC systems with the fresh air flowing from the ceiling, and during COVID they had to make emergency upgrades to the old cars, too.
