I wonder if it be possible to utilize something like the http://en.wikipedia.org/wiki/Interplanetary_Transport_Network http://en.wikipedia.org/wiki/Interplaneta

I wonder if it be possible to utilize something like the http://en.wikipedia.org/wiki/Interplanetary_Transport_Network http://en.wikipedia.org/wiki/Interplanetary_Transport_Networ... to get to the edge of the solar system with low energy requirements, and then burn the engines when you're out near Neptune?