Beamways and TriVector Traffic have written a report contrasting PRT and tram based transit for future use in Uppsala, Sweden. The report is in Swedish, but a brief translation made by Beamways is available here.
Uppsala has recently commisioned two additional studies, one to calculate the ridership attraction for the two alternatives, and one to calculate the socio-economic benefits (CBA). When these studies are finalized we will make them available here.