Filipinos are intelligent Cash Cab contestants. Once they've won all that money and the host offers them "double or nothing", they decline and exit the cab with the money they already have as soon as possible. That is because they watched "double or nothing" on TV the first time around and saw how the contestants LOST. All it takes is ONE loss for everyone else to back off smartly.

Whenever someone loses, Cash Cab is NOT the cab that pays you money. It is the cab that disappoints you. Like all other cabs.