Kevin Harvick shares photo of his massive, disgusting blister

Warning. This isn’t for the weak stomached. 

Kevin Harvick’s heels took a beating on Sunday at Somona Raceway.

Some days really aren't that much fun inside the car…

A photo posted by Kevin Harvick (@kevinharvick) on

On Wednesday, things were worse for the driver of the Stewart-Haas Racing No. 4 Chevrolet SS. Much worse.

#Nasty would be an accurate assessment of the situation. Thankfully, "Happy" is in good hands and on the road to recovery. 

Still, it’s enough to make a NASCAR Hall of Famer wince.