They are smart. Too smart. If they were big enough they'd simply kill us all. Glad they don't drive.
Dunno. They might be an improvement. They actually understand what the lines on the pavement mean. Have you ever watched crows feeding on roadkill on an interstate? It looks like you're going to nail them, and then at the last moment, they casually do their crow walk to the shoulder, cross the white line, turn around and watch you go by. Coast clear, they stroll back to the feast.
On the other, other hand, mebbe they would kill us. I heard a story recently about a crow in the same situation that simply flattened himself to the pavement, letting cars pass over him at 65 MPH and then popping back up.
Here's two more short crow videos, and I promise no more: