If you are travelling at the speed of light and you turn on your headlights what happens?
or:If you are travelling at the speed of light and you turn on your headlights what happens?or:You will see them light up the road because they will
or:If you are travelling at the speed of light and you turn on your headlights what happens?
or:You will see them light up the road because they will be travelling at the speed of light relative to you.