How I would love to get my hands on a set of those right now. I have a '41 Ford coupe that I take to car shows and would love to set up a stand with those speakers on it next to the car.
In the town I live in, we had one walk-in and one drive-in, owned by the same person. One open in the winter and one in the summer. When I moved back here in 1984, the drive-in was still open and I took my two young sons to it a couple times before it closed for good. Really wish it were still open.