The 30 minute TV special will air on ABC this fall. The official synopsis is as follows:
Bonnie is on a road trip to go see grandma with her mom and the toys are in the trunk. Mom gets a flat tire and they have to spend the night at a motel and all kinds of chaos ensues.
The synopsis from the first article about the short suggests that part of that “chaos” involves a missing toy — not anything we aren't used to by now. Angus MacLane, veteran Pixar animator and director of prior Pixar shorts, BURN•E and Small Fry is also at the helm for this one.