updated 09/01/2011 AT 12:30 PM ET
•originally published 09/01/2011 AT 5:15 PM ET
He may have his driver’s license – but it looks like Patrick Schwarzenegger isn’t too old for a ride from mom.
“Back to school shopping. I’m [too] tired so @mariashriver is pushing me around,” Schwarzenegger, 17, Tweeted on Monday, sharing a snapshot of his mother, Maria Shriver, carting him around as the two picked up school supplies.
Their trip comes at the end of a bittersweet summer for the soon-to-be high school senior, which began with the breakup of his parents’ marriage.
“Everyone is doing well, really well,” he recently told PEOPLE.