We spent a weekend contemplating fun uses for the Uber API. Here are a couple ideas that we abandoned - feel free to use as you wish:

* "Bar roulette" where you would hit a button, an uber would show up, then take you to a random bar sourced from Yelp.

* Last-minute ticket sales to events (e.g. in the hour before they start) that include transportation

* Having bars or clubs offer to drive people there for free and bid based on demographics of the user like an ad - e.g. "We need more people in this age range, of this gender, etc." They would set a bid, and the app would ping people that matched the criteria and offer to drive them there for free if the estimated fare was less than the bid.