American Express and Uber will give you 2 free rides from major airports through the end of the year valued up to $65 each, using any flavor of Uber you wish.
Register right away adding promo code AMEXAIRPORT in the Uber app, you don’t want them to run out of code uses before you do so. You need to have an Amex card as your payment method when you request a ride (even if the ride is going to be free) for this to work.