back in 05 I had this happen to me. I was working with a team back then so the entire time i pretend i was on the phone with my wife - which in fact it was the look-out guy inside the car... The young kid started looking around for his manager, and told me to wait there. Being this was BestBuy I could see code on his screen so I said ok fine, but I really need to take a piss. He almost didnt know what to say but just pointed towards the bathroom which was by the front of the store. I walked normal towards the bathroom while talking to my guy, told him to move the car and meet me 2 blocks away. As soon as I passed the glass doors, I started running (jogging) while my guy kept looking to see if anyone was following me. Got in the car, stopped at macdonalds to take a shit, and went back to work at the next store. The secret is to keep your cool. It takes cops at least 10 minutes to get there which is plenty of time for you to get the fuck out. Don't panic and simply get the fuck out.