Hey - I just thought of a great refinement. Have all the machine guns shoot blanks. The noise alone will scare the hell out of any cheater, who would then think twice the next time. But here's the clincher - have the guns shoot real ammo say one out of every twenty times they go off. Sort of like toll booth Russian roulette.
We announce to the public that if they drive through without paying there will be no fine or penalty. If they survive. You pay your money or you take your chances.
Oh, full disclosure - I just bought a lot of stock in a company that manufactures bullet-proof glass.
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