Oh! Didn't want to reflect the size of the street as a good, or bad, thing.
Just as another explanation why Paris can be SO dense, with buildings that aren't incredibly high - Buildings are packed in close to each other. The height of the buildings are a signature architectural element of Paris, broken only by the Tour Eiffel.
Businesses many times occupy the ground floor, with apartments up top - relatively normal in European cities, but against many zoning laws in the States.
The layout of the city certainly doesn't make owning a personal car all that, say, automatic of a choice. Paris is not a large city. When living there, I may have used the metroonce a month, but mostly just rode my bike to where I wanted to go (cheaper! and usually faster...). You could easily walk half the city in a relatively short amount of time (as I was oft to do after a party!). High speed trains could whisk you to many bordering countries in just a few hours. Ah! Paris: un joli désordre!
