Since this is the first prototype, I'm guessing the R&D cost that much. You're installing cycle track plus power generation infrastructure in one hit. Neither

Since this is the first prototype, I'm guessing the R&D cost that much. You're installing cycle track plus power generation infrastructure in one hit. Neither of those things is cheap on its own, e.g.: "Cycle track costs at anywhere between £100,000 and £900,000 [per km]" from https://transportretort.wordpress.com/2011/02/09/how-much-would-cycle-paths-cost/ https://transportretort.wordpress.com/2011/02/09/how-much-wo...