Perhaps the Uber app should offer something where you can "reserve" a ride at a specific location and time in the future. If you are going to be at Foo Bar drinking it up, you can say "Pick me up at 10pm". And at 9pm you get a push notification, "We will pick you up in 1 hour. [OK] [Not Yet] And then you can modify the time to get picked up, so if you decide for another pint you will still have that cab coming to get you even if your decision making is no longer good anymore.