A lot of those, I expect the vast majority of them, are in a regular 4 door sedan, or a shitty old camper that barely runs. People living in cars, on a friends couch, etc, all count as homeless.

The streets in the peninsula are lined with campers and vans in varying levels of decay, but mostly functional if a bit unclean.

I've been thinking about doing a dashcam of 10 miles of El Camino Real to show the extent to people unfamiliar.

I'd love to see that. When a video surfaced a few years back, of the Santa Ana riverbed behind the Big A in Anaheim, it was much easier to share the video with family and friends who were unfamiliar than it was to try to explain what I was seeing (I stopped into that particular tent city a couple of times searching for an ill family member who contends with bouts of homelessness).

In San Jose there are/were several on ramps to 280 and 101 lined with tents where people lived last time I was in the neighborhood. It's kind of mind-blowing the first time you see people living like that here.

Not sure what you're saying, sounds like you're agreeing that they aren't living in "expensive, customized vans"?

Really that many vans? 10 miles?

I thought it’s anecdotal

Yes it's really that many. The vans and campers tend to move around to different areas as the police crack down on illegal long-term parking in particular spots.

It is not 10 miles bumper to bumper, but in that 10 miles you will see very many apparent vehicle residences.

The cities that have to manage the people living on their streets in vans (usually much less fancy) can't treat them as anything but homeless.