After seven years together, Danica Patrick's marriage to Paul Hospenthal has run out of gas.
The NASCAR driver announced the news on Tuesday on her Facebook page, telling fans: "This isn't easy for either of us, but mutually it has come to this. He has been an important person and friend in my life and that's how we will remain moving forward."
Patrick -- who met Hospenthal, a physical therapist, while undergoing treatment for a non-racing injury -- is hardly the first well-known NASCAR driver to surprise us with news of their split.
Click through the slideshow below to learn about five NASCAR stars who shocked fans with their divorce announcements.