Fast-casual Mexican cuisine franchise Chipotle released impressive Q3 earnings on Thursday, showing big revenue and sales increases. Sam Zietz, the CEO of cashier-less checkout software company Grubbrr, joined Cheddar to discuss the numbers and how innovating in automation and digital sales contributed to Chipotle's recent success. "Almost 50 percent of their sales came from digital sales, which is showing the change that we're seeing in the restaurant space," he said.