The Montana Department of Transportation started a legal debate with an advert urging drinkers to get a lift home. The public safety video featured a horse picking up a rider at a bar.
It was meant to act as a metaphor to encourage drinkers to seek alternative means of getting home. But in a state well known for its horse culture it is being taken literally.
Curious residents calling Helena Police have been told that riding a horse while under the influence is legal. The law in Montana carefully defines a vehicle, and excludes those running under real horse power.
The video shows a savvy horse carefully obeying traffic laws on a night-time journey through town before stopping in front of a bar to pick up a rider who has enjoyed a drink or two.