RE the head angles - if that linked article is accurate then using road geo at the front makes for an easy handling rental/learner bike with the added advantage of using stock headtubes and forks from their road bikes.
I somewhat doubt that would be the case, as the majority of rental track bike did have standard track geo (Precursa for instance).
Thuekr's comment about the aerobar make sense.
@edscoble started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
RE the head angles - if that linked article is accurate then using road geo at the front makes for an easy handling rental/learner bike with the added advantage of using stock headtubes and forks from their road bikes.