I came across a third review of Jupiter #19 today, this one at SF Crowsnest.
Of Roadwalker, the reviewer says:
Roadwalker by Gareth D. Jones is the sequel to a previous story and, on reading this, it seems likely that there is something farther down the road in the future. The story could go on and on but, thankfully, it's well-written and there is mileage in it. An entertaining tale set in the future after civilisation has collapsed, it concerns the building of a road through the wilderness and the reaction of the people who encounter it.