You're leaving the pub, at night. You've had a few but someone who is adamant they'll be driving home has had more than a few. You're headed in opposite directions, and you feel you're not fit to drive.(Alternate means of getting home sorted before you went out.) It's not the first time the person has driven home after a night out. They've even managed to hit a stationary car, with a younger driver at the wheel. Passing all the blame onto the younger driver, who'd had one or two, by their own admission. So as per the thread title, What Would You Do?