Boulder has a city population of about 100,000 and a metro region population of about 300,000. Here are some random Street View locations from European towns and cities of a roughly similar size.
Reading, England: https://goo.gl/maps/yQaTTaWQJav
Bonn, Germany: https://goo.gl/maps/Pu9Ro28F4UH2
Caen, France: https://goo.gl/maps/ppgL2J8nsAJ2
Vicenza, Italy: https://goo.gl/maps/rMtCBEqC7vr
Click around a bit, explore the neighbourhood, get a sense for the place. Get the picture?
American urban development happens on a scale that is simply incomprehensible to most Europeans. I spent a good ten minutes clicking around Boulder, looking for the city centre; it took me that long to realise that there wasn't one, at least not in the sense that I understand.
Of course, you wouldn't want to live in Boulder without a car. Pretty much the whole point of being there is to get into the mountains.
So yes, Denver has a few walkable areas that are nice. But if you can only walk 80% of the time and still have to own a car for the other 20%, which has to sit in a parking spot somewhere all the time, then we're back to the subject of this article.
1. I'm not saying it can't be done, but if you have kids, or aren't able-bodied, or don't want to spend 3x - 5x more time on public transit than you would in a car, or live in an area with extreme weather conditions, or don't want to be weird-sweaty-bike-person all the time, etc, then you need a car in most of America.
In the predominantly hispanic areas around Phoenix there are tons of tiny shops serving the neighborhood -- it's a thing. Where I live now there used to be a few corner markets but now that gentrification is in full swing they are all gone and are being replaced with trendy restaurant/bars with the people presumably now shopping at the major supermarkets. There were probably more before they built the super-massive Ranch Market but I didn't live in this area then so can't really say.
I'd venture to say it has more to do with the cost of owning/operating a car, in Mexico (and much of Europe) they are significantly more costly than the US so the convenience of "shopping local" is different.
it's only sad because you went to a 7/11 expecting to get produce! I guarantee you there's a real grocery store within a few blocks.
Pretty good chance that's not true: https://en.wikipedia.org/wiki/Food_desert
"In 2010, the United States Department of Agriculture (USDA) reported that 23.5% of Americans live in a food desert, meaning that they live more than one mile from a supermarket in urban or suburban areas, and more than 10 miles from a supermarket in rural areas."
Or a 23.5% chance that's not true...