Portillos recent announcements that their drive up windows will not accept cash is a strange and maybe a bad call. The majority of cars are probably paying by some type of card payment, but there are still plenty of people, possibly 15%, who don't want to deal with this and want to pay cash. This seems foolish as drive up business is the heart of their business, and Portillo's is saying no cash. The bean counters might look clever, but beware as this this nicks earnings.