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Need to ride in less than bright light? How about the "Betty?" It only costs $1,185. made by Germany's Lupine Lighting Systems, generates so much heat that if a rider isn't moving fast enough to create wind, the light will automatically start dimming itself to prevent the light from overheating. At 1,400 lumens, it's about as bright as a car's headlight, the company says. There's a wait-list of up to two weeks for the light, which is made up of seven LEDs.