Not to get too far off topic, but over the years I've only had a handful of people try to run without paying. And I stop for pretty much anyone. On one notable occasion, a couple of 16-17 year old teenagers bolted, and I calmly took the time to put the cab in park, turn off the engine, remove the keys, and lock the car. By then they had gotten more than half a block. As an avid trail-runner (and soon to be ultra-marathon runner), I knew I could easily catch at least one of them, whether it took 3 blocks or 30. I was already gaining on them after only 2 blocks, and then suddenly a pickup truck went roaring by me at high speed, and cut off the kid who was 1/4 block in front of his friend. The second guy slowed down a bit, and never saw me coming as I nailed him at full speed and slammed him to the ground (he was about as tall as me). He was already too tired to put up much of a struggle, LOL. The guy in the pickup (an off-duty SFPD sergeant) walked the other kid up by the scruff of his neck and asked why I was chasing them. I told him that they ran out of my cab. He asked how much was on the meter, and I told him $4.15 (obviously it wasn't the money but the principle). He laughed made the kids cough up the dough, and I insisted on a $1.00 tip for my trouble. No charges were filed.

I actually look forward to someone bailing, but it pretty much never happens.