VIDEO: Robin Miller's Tough Guys - Bobby Unser

He's tough guy, a model no longer in production and one of the most opinionated and entertaining characters to ever sit in a race car. But Bobby Unser was also one of the bravest, fastest and most aggressive racers to ever lap the Indianapolis Motor Speedway.

As a three-time Indy winner and one of only two drivers to triumph in three different decades at IMS, Unser became a household name in 1968 when he bested the turbines. His second win was the only one Dan Gurney ever got and his third came for Roger Penske in a car he developed.

Following his driving career, Unser became the straw that stirred the drink in the ABC television booth as he schooled the viewers right along with Paul Page and Sam Posey.

Now 82 (he turns 83 next month), Uncle Bobby doesn't walk real well, but his vocal cords are strong as ever – just like his opinions. Here's a little history of this American treasure in today's Tough Guys vignette.