I keep thinking about railbiking.
The Bentley Railbike plans are available from this site, and it looks very simple yet effective. I like that it keeps the bike useable off-track as well. We could mount a platform on the bottom struts of the outrigger and load it with some lightweight camping gear+food.
There are some commercially available railbikes here. They look pretty solid. They look nice and low, and could handle a load of camping gear+food. They also look they'd be a giant pain in the ass to heave off the track in a hurry.
I think the heavability is no small thing. Let's be honest: you know as well as I that we're not going to be content to just tool around on some 3 mile long abandoned railway. C'mon. Don't kid yerself, we want to ride across Nevada or down to Mexico.
