My point was not about (officially or not) scheduled spikes in traffic. These are known for all parties in advance. I was talking more about organic traffic - Random Joe hailing a cab just because. And cabs generally just drive around expecting to catch the Random Joe wasting time/vehicle/fuel. Now if you can predict temporal/geographical density of Random Joes hailing a cab - well, you have an edge there simply by increasing utilisation rate. Is this even possible? Have no idea.