Snapped: Killer Couples (2013)

S3E17 Road Trip

Title: Road Trip Plot: On the final day of the Flynn-Fletcher family's road trip, Candace believes she can finally take a break from trying to catch her brothers in the act. However, Phineas and Ferb have other plans as they set out to construct a diner right on top of their RV. Meanwhile, Dr. Doofenshmirtz is on his own journey, driving a massive truck to distribute his boom juice throughout the Tri-State Area.