[gomaaa]

Nope, we even had a thread about this question not too long ago... although I can't seem to find it.

You can't just ADD speeds that way when dealing with relativisitic velocities. It works fine for slower relative velocities (like two cars passing one another on a racetrack) but not at all when the velocities approach light speed (like two particles passing one another in an accelerator).

The math is different, and in physics that's what counts. This website explains more, but is not really written for the layman, sadly.

http://math.ucr.edu/home/baez/physics/Relativity/SR/velocity.html

[reagandemo]

Humm... I just remembered a Scientific American magazine article back in the late 60's where they talked about theoretically making a time machine with two spinning disks travailing in opposite directions at a high rate of speed and achieving higher than the speed of light and time travel.