The United Kingdom is in the process of researching and testing the use of Apple Wallet as a valid driver's license. Drivers will only need to use their phones to pull up their drivers' licenses instead of carrying around a physical version. This could mean that really soon, more and more people will only need to carry keys and a phone and will no longer need to worry about carrying a physical wallet. However, availability of Apple Pay is what is still slowing this down from becoming a reality. So here's a little prototype of something we're working on #drivinglicence...
Source: http://www.gsmarena.com/uk_wants_to_let_uk_drivers_carry_virtual_licenses_in_apple_wallet-news-18220.php