Here's Real Laziness

[Medusa]

Not only lazy but reckless. The dog may have been trained to run alongside the car but what if it spotted something, say a squirrel perhaps, and decided to chase after it? He could run in front of the car and even though it was going at a slow rate of speed, the dog still could've been killed or injured, perhaps even hung up on the leash.

[happylabs]

He probably got the idea from the movie Turner and Hooch. When Tom Hanks couldn't get Hooch into the car he drove home holding the dog handler thing with one arm and driving with the other.