Millionaire investor Michael "Rooster" McConaughey has a very specific marker for success.
"Hey, if you've got two cars, monetarily wise, you're successful," said McConaughey, co-chairman of the West Texas Investors Club, the investment group he started with his friend and business partner Wayne "Butch" Gilliam.
McConaughey, who built a lead pipe empire worth millions, described getting a second car as "the greatest thing that ever happened" to him.
So why use two cars as a benchmark for success? It's really about having convenience, he said.