Acording to the Hiem therory and by useing a device called the Z machine scientists belive that they could create a hyper drive engine that could go to mars in as litle time as five minutes! With the proper funding and if all goes right a prototype could be in five years.

Here are some articles on the Z-machine and useing it in space travel
http://www.sandia.gov/media/z290.htm
http://www.newscientist.com/channel/fundam...925331.200.html