""Penn Station," I told the cab driver. The young, heavy-set man peered at me through his sunglasses and motioned me to get in. "I've got to get to JFK airport by 2:30PM. You think I'll be able to get there by train or should I cab it all the way?"" With that harmless question begins a most unusual 12-minute cab-ride and a conversation that demonstrates how every chance encounter in this world holds the potential for generosity and transformation.