To get a glimpse of the future of commerce in America, look no further than Sweden.
The Scandinavian country is largely a cashless society, with consumers relying on mobile phone payments or plastic. While the U.S. is still far from achieving the same level of cash-free existence, increasing numbers of restaurants and retailers are now snubbing the lowly dollar bill.
Some merchants such as SweetGreen, a salad chain, refuse to open their registers for cash, telling customers they can pay only with mobile payments or cards. With some newer vending machines, only a card or mobile wallet will get that cold Coca-Cola to roll down the chute.