You might imagine that police forces, keen on de-escalating conflict, would be eager to at least test this idea.
So far, though, Brewer hasn't found any takers.
He has talked to four police departments. The reactions have been varied.
Yes, of course, a bad guy driver might shoot the robot and drive away. Some drivers might just drive away without shooting, reasoning that the robot will be an impediment to the police car's ability to chase.
But anything that might, just might, begin to reduce the number of senseless deaths when police encounter drivers surely has to be worth trying.
A robot won't suddenly change prejudices. There's a small chance that it might, however, reduce tensions by just a tiny amount.
That tiny amount might, even if it's only in a few instances, be the difference between life and death.