The 10th annual Niello Concours at Serrano was awash in classy chassis, nice fenders and plenty of high horsepower, too.

George Markle of the Lamborghini Club America brought a 10-cylinder engine in the back of his 2013 Lamborghini Gallardo Performante Convertible to the event this weekend.

"The fastest I've ever gotten it without being scrared is 150. Then I scared myself and slowed down. This was at the Circuit of the Americas track in Austin, Texas," Markle said.

The club assembled every model of Lambos from a 1985 Countach right up to the new 700 horse Aventor.

Sunday's event celebrated the 50th anniversary of the Lamborghini as well as the Porsche 911.

Sponsor Niello Motors also celebrated their 50th anniversary as the oldest Porsche dealership in the U.S.