Happens to me a lot specially when stopped at a traffic light. Usually let it go...
Was parked at Starbucks recently. There were a few guys standing around few feet behind...Was priceless to see the expression on their faces when I turned it on. All of them turned at looked at it with expression on their faces suggesting: "What the hell is that?"....Lot of people I guess dont know that the "M" version exists.
..Its just another X5.