Got this in the mail. 50% off next Uber trip (up to $20) for Uber X and XL only as an Uber One member. Redeem using code, promotion expires 14 days after being added to your account and may take 15 minutes to become redeemable as per T&Cs.
If you don’t have Uber One get the 6 month PayPal deal or use trial.
Note that there seems to be a rolling cap (maybe?) on redemptions. As some helpful users commented, the deal is now working again!