From the uber blog.
For a limited time, we’re giving away 5 FREE uberX rides so you can explore Pittsburgh in a way you’ve never done it before!
HOW DOES IT WORK?
You get 5 FREE uberX rides! (Up to $25 per ride.)
No promo code necessary, all you need to do is ride.
FREE rides available in Pittsburgh only.
FREE rides expire 14 days after your first uberX trip.
Not sure if it's only for new users, or for the first time used in Pittsburgh.
