This is a clever marketing ploy by Uber and Alibi Bar in Yekaterinburg, and it’s worth a mention on Designer Daily for the great execution and design by Red Pepper Creative.
The agency designed the cards with a small sticker that can be peeled of and used as a saliva test. Patrons of the bar can then see if they are able to drive or if they should take a taxi. A clever way for Uber to promote its services while fighting for a good cause: fight drunk driving.
You can see how it works in the following video.