I passed on this story early yesterday - it sounded way, way too much like an April 1st thing for me to take seriously. In the meantime, everyone else has linked to it, so here goes:

The hypothetical device, which has been outlined in principle but is based on a controversial theory about the fabric of the universe, could potentially allow a spacecraft to travel to Mars in three hours and journey to a star 11 light years away in just 80 days, according to a report in today's New Scientist magazine.

The theoretical engine works by creating an intense magnetic field that, according to ideas first developed by the late scientist Burkhard Heim in the 1950s, would produce a gravitational field and result in thrust for a spacecraft.

I still think this needs to be taken with a huge grain of salt. It comes off sounding "too good to be true" to me. I'd love to be wrong about it though.