Using LEDs to display messages on the back of a car? Looks like we have yet another contender with the same idea, except this time all four sides get an LED panel each. The idea behind Daihatsu's Pico concept EV is that it can interact with surrounding pedestrians and drivers using messages with matching colors. For instance, the LED belt can issue a red warning on the back if a car is following too closely; or when driving past pedestrians in close proximity (think rascal scooters but with front and back seats), the belt can turn green and indicate that the car's limited to a safe top speed of 3.7mph.
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