Take advantage of regulatory loopholes to affect the design of parking garage such that the parking garage can be almost instantly retrofitted into additional manufacturing space.
Bathrooms on every floor, cargo elevators (for cars, but can be repurposed for forklifts), the ramp is just a spiral on the side and not integrated into the structure, the height of each floor is consistent with the rest of the building, level floors, Include provisions for additional electrical, plumbing, compressed air, nitrogen, dry air, vacuum, and HVAC systems, etc.
That way, when cars drop in popularity in a few years, they can retrofit the parking garage into additional manufacturing floor relatively easily.