Earth-to-Mars in three days! OK? Tell me more.
That is what the Magnetic and Electrostatic Nuclear Fusion Reactor, or simply CrossFire Fusor, apparatus designed by 40 year old Brazilian Moacir L. Ferreira Jr. for confining and fusing light atomic nucleus at expressive rates releasing a tremendous amount of energy intended mainly for thrusting a spacecraft promises [patent pending]!
To better understand fusion see the Fusion 2100 vid.