Is there any evidence that Europeans are better drivers than Americans? I'm not saying you're wrong, I've just never seen any kind of data about that.
Also I'm not sure where you got the idea that the US doesn't have sidewalks.
Edit you mean there are places in the US without sidewalks? Ya don't say!
Now overlay Europe over a map of the US to see just how much larger the US is. And then tell me that everywhere on the entire continent of Europe has sidewalks.
The person I replied to was suggesting that sidewalks are a rare thing in the US and that's absurd.