In the perfect world, the public transport system is flawless and caters to just about anyone and everyone wherever they are going. Too bad the world is full of imperfections, which would mean ideas like the Carpool LED sign could be the next best thing to consider. All you need to do is place it atop your vehicle and let people know just how many more spaces are available in your set of wheels. Don’t worry about its power source – the Carpool LED sign will rely on wind power to keep its innards juice up.
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