I was working at McD's while going to school when those came out in the early 90s. What a nightmare. People would get angry because it took 10 minutes to get their food. 2 minutes is what people expected for a regular order of a burger and fries, can't do that with pizzas that are cooked to order. And people would inflate their wait times - I've been waiting for 20 minutes!!! I can see on my screen how long it's been, the computer counts up from the time the order is entered. 8:14, 8:15, 8:16... but you can't say 'no, it's been 8 minutes' because that would p* people off more. No, you tell them 'okay, I'll check on it' when I know it's going to be another two minutes and meanwhile I'm not serving other customers... oy. They really backed up the drive-thru too. Did I mention nightmare? They tasted good though.