I've been working for years on such a device. As soon as I get the patent process started, I'll o.k. it with Lynn and use this site to unveil it to everyone.
It will fit in the trunk of a car, and you'll be able to hit balls with it.
YodasLuke,
I'll wait and see what you come up with!
Kevin
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I could be wrong. I have been before, and will be again.
I always thought you could make one out of the same materials and concept as the pop up tents. Not sure the development costs would be worth the potential revenue.