Deer When Two Tons of Steel Are Coming at Them - The duality of Bambi

which people don't realize is actually really effective, since, iirc, people are a lot better at detecting things that aren't moving than most predators

Nah, I've seen plenty of deer eat it in broad daylight.

I think the real issue is that they've had thousands of years to get used to bipedal predators, but these wheeled smasher things have only been around for about a century, evolution is still catching up.