Pinoy Jeepney drivers - great multi-taskers!

During my recent trip to the Phiippines, I took a jeepney ride  to and from Manila to make it to a doctor's appointment at Manila Doctors Hospital on T.M. Kalaw st. I took a cab the day before but realized we were following exactly the same route as the jeepneys. Paid about P250 plus tips (nothing much really by US standards.. around $7 each way) only to find out (when I couldnt get a taxi the next day) that I could reach my destination at around the same time and distance, for only P20 each way (wow, that's just $.50). My amusement was not so much about the cost and the travel, but more about the Filipino jeepney drivers who are not only very skilled drivers, but were excellent in arithmetic and multi-tasking. A typical jeepney probably takes 15 to 20 passengers at any given time.. and on any given route, a jeepney driver could be dropping off and picking up any where from 30 to 50 passengers on one route, each one paying a different rate according to distance. So whenever a passenger says , "bayad ho, isa lang sa De La Fuente" (here is my money, one person, getting off on the De La fuente street, for example), the driver , as he continues with his skillful driving, and without looking at his money (bills and coins box) knows exactly how much to give back to this person. Sometimes, passengers in 2 or 3 come on board, and say similar things about how many they are and for where, and driver does the same thing.. I have never heard a passenger complain about being shortchanged! So imagine how skillful the driver is - hands on the steering wheel, checking out the street lights (sometimes, cops, when overspeeding), constantly on the lookout for passengers on the road, handling payments, stop and go motions, buying water or nuts from a sidewalk vendor, and sometimes, even singing along to loud piped in music. I salute these drivers, who probably earn no more than P500-P700 per day (about $15-$18 per day) net, after deducting perhaps jeepney owner's tolls called boundaries), and expensive gasoline. It is a hard day's work. And they dont even seem to mind the heat!