Considering that the growth of technology is exponential, i think in a year we will see it. In 5 years we will be testing the ability to travel into other dimensions in order to get to mars in 3 days. http://news.scotsman.com/scitech.cfm?id=16902006

Since the growth of technology is exponential....in about 40 years it will only take 1 year to get into a new generation.