During the trip, Homer falls asleep at the wheel due to taking a combination of pep pills and sleeping pills that he bought at a general store. He awakes to discover that the truck has piloted itself safely to a gas station due to an onboard automated driving system. Other truck drivers at the station have the system installed as well and warn Homer not to reveal its existence, as it would put all truckers out of work. However, Homer tells a busload of people about the device and incurs the wrath of a mob of truckers. Although the system ejects itself from Homer's truck, he and Bart manage to escape from the mob and deliver the shipment (artichokes and migrant workers) to Atlanta on time. They then volunteer to drive a trainload of napalm to Springfield so they can get home. The other truckers briefly consider relying on their own skills to drive, but instead decide to come up with a different money-making scheme.