Standing on the corner of California and Polk in San Francisco, I took out my phone and ordered a ride from Flywheel, an app that’s competing with rival transportation services like Uber and Lyft by leveraging the thousands of taxis already on the road. Like with those services, once I order a Flywheel ride, a map pops up with a car icon, showing me where my ride is in relation to me and allowing me to monitor the driver as he or she gets closer. MoreSteve Ballmer Steps Down From Microsoft Board“Electronic Makeup” Will Probably Terrify YouSt.