Originally Posted by
hillrider
I presume AA doesn't pay a normal fare to cabbies, so it's worth for them to take AA passengers only if they get 2 vouchers for 1 trip.
Since cab fares are generally regulated, I'd be surprised to find that AA is able to pay anything less than the metered rate (or flat regulated rate, if applicable). Perhaps they don't tip, and perhaps passengers using a voucher tend not to tip.