It might be possible if you're willing to cheat and distort perception: Light travels through different mediums at different speed. It travels slower through water and glass than it does through space. So what if we measure its speed through water and glass (or a glass full of water) and then try to surpass that speed in space. Then technically we could travel at a speed of light :) Since light is traveling at light speed from our perspective, then from the light's perspective, we are actually traveling at the speed of light as well. Or...since the edge of the universe is traveling faster than the speed of light, then from the universe's perspective, we would be also be traveling faster than the speed of light....but then light would also be traveling faster than the speed of light from the universe's perspective...so technically we would still be traveling at the speed of light? I think...