The Repair Garage, designed by Albert Kahn, was the facility where vehicles were completely disassembled so that each part could be examined. This process allowed engineers to identify failing components, determine the causes, and develop improvements. Such rigorous testing was essential to Packard’s reputation as a producer of premium vehicles.

A defining feature of the building is its innovative roof system, designed to span the space without interior pillars. This was made possible by the “Kahn Trussed Bar,” a steel reinforcement bar with 45-degree flanges that enabled long, unobstructed spans and produced exceptionally strong support structures resistant to fracture or failure.