Mars in three days?

[Mugwump]

THIS LASER PROPULSION SYSTEM COULD GET US TO MARS IN JUST 3 DAYS

NASA scientist Philip Lubin is working on a system where lasers propel spacecraft with giant sails to the Red Planet in as little as three days. Much like Bill Nye's much-hyped solar sail, this 'photonic propulsion' system relies on the momentum of photons - particles of light - to move forward. But instead of photons from the Sun's rays, Lubin's design would be given a push by giant Earth-based lasers.

http://www.space.com/31958-mars-in-3-days-photonic-propulsion-technology-could-bridge-the-gap-video.html