| RE: Courtesy wave.
We wave all the time.
I saw this thing on QVC a long time ago. It's like an LED message board. You can put it in the back of your car. Then like say you have a situation like yours, and you want to say thanks or something. The control;er has preset messages like "Thank you" "Your welcome" or "Sorry". You press the button that you want and those words pop up.
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