I was dismayed to find out that in booking my office had pre-paid the tip - the receipt forwarded didn't say that so I wound up tipping the driver too. He never mentioned this and when I called to complain, the company was "well you should have known". Meanwhile, the driver got way more tip than deserved. He checked his phone while driving (held in two hands while using his wrists to steer- albeit a short time but still on a highway) and he was a serial tailgater. Car was fine, the driver courteous but certainly nothing to merit a double tip. So beware when you book. And don't bother to try to get the company to care. (BTW, still waiting - day #3 - for a detailed receipt and survey to be sent - hmm guess they don't want to hear from me again.)