Check your lug nuts/wrench
Mine are swollen after 9 months/9K. Could be defect/cheap lug nuts as Ive read Ford fusions have had recalls for a similar problem.
The lug nuts aren't all steel and have aluminum cap on the outside. Water or moisture and rust can get in and swell the cap making it impossible to get your wrench on.
My car is garaged and rarely out in the rain, we had a beautiful dry spring summer and fall here.
Might want to do a quick check before you get stuck (if you are not using road side assistance) and be sure your lug nuts are good and not swelling.