04-28-11: ChayroYes. Bizarre as it may seem, no matter what the velocity of a light source is with respect to an observer, the velocity of the light as perceived or measured by the observer will always be the same (approximately 186,000 miles/second in a vacuum).
If you are traveling in a car at the speed of light and turned your lights on, would they do anything? I always wanted to know the answer to that.
See this writeup on the Michelson-Morley experiment. Constancy of the speed of light is also fundamental to Einstein's Theory of Special Relativity.
Of course, the maker of the vehicle would have problems meeting Corporate Average Fuel Economy standards, because it would require infinite energy to accelerate the vehicle to light speed. :-)
Regards,
-- Al