It's not about amount of time, it's order of operations. Taxi: already on the street, driving around, I try to get flag one down by essentially luck. Pre-arran

It's not about amount of time, it's order of operations. Taxi: already on the street, driving around, I try to get flag one down by essentially luck. Pre-arranged: I contact you, tell you where I am, you specifically set out to pick me up. Pre-arranged is exactly how traditional car services have always worked. The fact that improved technology means pre-arranged also can be fast is a good thing.