Greg Biffle, who competed full-time in NASCAR for over two decades, has an estimated net worth of $30 million, according to Celebrity Net Worth.

One of the biggest icons who has been worried about this is Greg Biffle. The former superstar spoke ... for his excellent work in helping those affected. Notably, Biffle used his helicopter to send ...

Then Johnson's engine faltered with only six laps remaining. He lost the race - and the NASCAR Sprint Cup points lead - to Greg Biffle on Sunday. "I got it turned around and was catching him ...