When you injured your back a few days ago, your doctor prescribed muscle relaxers. You are supposed to take two per day for the next ten days. Right on schedule, you took your second dose a couple of hours ago, but now you forgot to eat. In-N-Out Burger is just up the road, it will be a quick trip to go grab a burger and come home. Besides, you do not feel drowsy or incapacitated in any way. You were on your way home with your burger when a police officer pulled you over.