Cool idea, I think at one point or another we all consider doing it.
I thought about putting one on the Turtle, maybe a small green led readout in the back window, but then I figured some dumb ass would rear-end me trying to read it, and I'd be back to the drawing board. I'll just stick to putting on my ecomodder stickers (if Daox ever sends them to me)
When I was driving the Black widow I couldn't have done it anyway, because half the time the car was rolling it was off, lol! It would have looked like a cheesy motel sign, on, off, on, off . . . . .
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