Your car, any car is doing the "speed of light" down a freeway, the freeway does not end, and you cannot crash.

You turn your headlights on, what happens?

Ask Steve Wright!

What is the speed of dark?

Darkness is a well defined physical concept it is the absense of light, duh! However, the vacuum flux guarantees their will always be some small amount of light as long as there is spacetime. Hence, what we call darkness is relative and obeys the Uncertainty Principle. This means, of course, that it's speed can be greater than that of light, especially since it carries no energy or information

quote^

You turn your headlights on, what happens?

That depends; does the car I'm driving have Dave's (Zs-ondabrain) Headlight Relay Harness?

I am traveling at the speed of light now.

I just passed you as I am going ludicrous speed!

Space Balls

High beams or low beams?

Dennis

Nice one Terrance. And are you running 55/65's, 90/100's or HID's??

That may help in the decision of of whether the light can break thru the speed barrier.

or maybe not,

Dave

It draws power from the battery.

Your compressed beams see a set of elongated beams approaching, you realize that you are passing yourself as you are being drawn back to the vacuum left behind from your leaving your original space-time continuum. Then you realize that you can never go back!

Dunno about the speed of light, but at sub-light speeds, there's a phenomenon called blue-shift. I always though it would be a fun defense for running a stoplight that, "I was going so fast that the red light appeared green." Of course for that to happen, a person would have to be traveling towards the light at about a fifth the speed of light -- about 145 million mph.