Michael Waltrip — ‘McDreamy’ Has Racing Groupies … He’s Legit On the Track

Patrick Dempsey

Patrick Dempsey is making serious strides on the racing circuit — not only impressing other drivers … but already racking up a solid bunch of race groupies … so says NASCAR legend Michael Waltrip.

The former "Grey's Anatomy" star recently left the show — and has been making a serious effort to climb the ranks in the world of pro race car driving.

And apparently, his efforts are not going unnoticed — with Waltrip telling us McDreamy has a strong legion of female fans who can't get enough of him at the track.

So, if an actor can become a racer — can a racer become an actor??? Waltrip gives it a shot in the clip … and it's pretty hilarious. TMZSports.com