139 mph is not "reckless driving" in that car. I have no doubt the car was rock solid and glued to the road and much safer at speed than anything Detroit is turning out doing 75. If he was riding on a long straight, late at night or during the day with no traffic in a secluded, rural area there wasn't anything "reckless" about it... just an excuse to write the guy a stiff ticket to fill their coffers with coin.
The Audi R8 is a rolling work of art and science. I must confess it is also my "dream car" as well.