The parking garage at my work would be awesome, but not before 8 PM on a weekday.
There would be too many cars.
It has a sick down ledge that would need to be waxed like hell, but would work best on weekends or after 8 pm.
If you can get the box loaded into your vehicle, my garage is pretty damn big with high ceilings. Brand new concrete, no slippage.
Just an idea, my brain is mush right now.