I forgot my keys in a Grab a Cab taxi. When I backtracked my day and called the cab company the following morning to see if they were there, the driver himself took the call, said he has my keys, and that he saw the library keyring attachment and was planning to drop they keys off at the library… but instead said he’d deliver them to my office! So, first of all, amazing that they answer their phone(not all Valley cab companies do), and second that he remembered me, and thirdly that he was generous enough to bring the keys by personally.