Katie Weinberger, 39, owner, with her husband, Kurt, of King Bean Coffee Roasters in North Charleston, S.C., on her family’s 1986 Ferrari 412, as told to A.J. Baime.

For years at our business, my husband and I have worked with Italian machinery—a 60-kilo Petroncini coffee roaster, and espresso machines made by La Marzocco, Rancilio and Nuova Simonelli. There is something about the quality and the look of these machines that we have always loved. About two years ago, they inspired an idea for our family: to hunt for a Ferrari,...