Flow would also vary the cost of parking spaces according to demand. On weekends, prices might drop in business areas while they climb near music venues. Sidewalk claims this would increase income from parking by 10%.<p>However, Pozdnoukhov says that variable pricing is far from proven. “A pilot project in San Francisco was not very well received,” he says. “If Sidewalk can show value to drivers, it could be a different game, but that’s easier said than done.”<p>you think....