The ultimate anti-tailgator device!

Here in Texas, as in most states with some obnoxiously ignorant drivers, the vx has been great for not seeing tailgating, simply because I can't seem them anymore!
However, in the event one of those jokers forgets how to stop (I have nightmares about this constantly!) THIS would be a great 'safer barrier' alternative!
Fill it with water, or hire the neighbor kid to hang out in there and make a peep-hole, so that when an idiot gets too close, bam! Out comes the machine gun-toting 12 year old in full war paint!!
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