# Relative Speed vs speed of light [duplicate]

I've got two questions which are related and I've always wondered about and got no answer for. (I'm not a physics student and know only basic physics, so the easier explanation the better)

1. Two cars traveling at 60km/h in opposite direction. The speed observed by an onlooker is 60 km/h for each car. If you are in the car, the observed speed of the other car is 120km/h. Correct?

We say that speed of light is the fastest you can travel. In the car example (ok, maybe spaceships to be a little more realistic) if they both travel in the speed of light or near. They will observe the speed of light * 2 Is this possible? or is the actual highest velocity speed of light /2

1. Similar reasoning, if you are in a train travelling in the speed of light, then you are unable to walk forward in that train, since you can't travel faster than the speed of light?
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## marked as duplicate by Qmechanic♦, Manishearth♦, John Rennie, dmckee♦Jul 16 '12 at 13:33

Possible duplicate: physics.stackexchange.com/q/7446/2451 – Qmechanic Jul 16 '12 at 8:45
youtube.com/watch?v=KZ0gQevrPTo – ZolaKt Jul 16 '12 at 10:32
I guess it somewhat answers my question. But I still have a problem really grasping the answer :) – Vixen Jul 16 '12 at 12:41