Air electric PCCs were built before WWII. PTC 2501-2580 were built in 1942 and some ran until January 1983.
http://www.phillytrolley.org/2501-2580.html
Below are photos of 2582 on the last day of Route 13 service on Chestnut Street before Route 13 moved into the trolley subway, 2520 at 16th and Erie in August 1966 and my IHP Air Car painted as PTC 2534.
Some day I plan to get a TTC air car.
http://www.phillytrolley.org/2501-2580.html
Below are photos of 2582 on the last day of Route 13 service on Chestnut Street before Route 13 moved into the trolley subway, 2520 at 16th and Erie in August 1966 and my IHP Air Car painted as PTC 2534.
Some day I plan to get a TTC air car.