Bet you didn't know that Ford had its own pilots to test the B-24 Liberators it was building for the ARMY at the rate of one every 55 MINUTES!! A little bit of history for aviation buffs.This was BEFORE Pearl Harbor ! Ford's B-24 Bomber Plant at Willow Run, Mich. Henry Ford was determined that he could mass produce bombers just as he had done with cars.He built the Willow Run assembly plant and proved it.It was the world's largest building under one roof.