Moving faster than light gives you [i]imaginary[/i] mass, not infinite mass. E = γmc^2, solve for m and substitute a speed greater than c for v in [url=http://en.wikipedia.org/wiki/Lorentz_factor]γ[/url]. A more precise definition is that as your velocity approaches c, energy (or mass) approaches [url=http://www.wolframalpha.com/input/?i=limit+of+1%2Fsqrt%281-v%5E2%2Fc%5E2%29+as+v+approaches+c-]infinity[/url]. This forbids anything with mass approaching and breaking the speed of light, but special relativity does not prohibit things always traveling faster than c (i.e., tachyons). They probably do not exist though. Even given that, your example does not make sense. You are breaking the laws of physics, then asking what happens in the laws of physics. You can derive pretty much everything when you assume a [url=http://en.wikipedia.org/wiki/Principle_of_explosion]contradiction[/url].