In fairness, there?s probably a bit of insurance to be paid for shipping a ?160k car.
There was one outside my house last weekend, a guy who works for a dealership always drives something nice at long weekends when he?s home visiting his folks. It?s very subtle - sounded normal as well when he drove past. He had an m4 earlier in the year and that?s the opposite, aggressively styled and sounds angry all the time, growling and popping even when just driving through town. I?d say it?s deliberate, your typical m5 owner doesn?t want a car that?s balls out all the time.