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If I were in a car travelling at the speed of light and I turned on the headlights would anything happen?
for driving without lights before then.
i imagine that you'd experience it going forward at c relative to you, but an observer in front of you wouldn't. they'd only see it moving at c towards them (ie at the same speed as your car)
anyway, we're a long way from having cars that fast. even when we do the FIA will probably ban them as an unfair advantage.