Outdoor stuff was also not really forced or brought up other than offers to join or use equipment, which was very kind.
I've worked for 4 different companies in the Seattle area and it's been 50/50 indifference vs quiet disdain.
Also, people who don't live the suburban car life typically don't buy "weekly" groceries.
But the type of vehicle is a moot point as it's not the shopper who has to own nor drive it. So they can still run a household without themselves owning a car (which was the point of the discussion)
I suggest you google for "fiets met kinderzitjes" (bike with child seats) to get examples of how you can transport 2 small children on one regular bike.
Once the children get older they can get their own bike. If you need to transport more than 2 children, get yourself a second parent or a bike that's designed to take cargo (yes I just called your children cargo).
My mother raised me and my sister on her own, using just a bike.
At least in Amsterdam where I biked around a bit, it seemed flat as a pancake.
on a 500$/month grocery family budget you are looking at 100$ - 150$ more for convenience potentially. Its a lot of money for most.
Move closer to work you say? Any cost saving from getting rid of one car will be overshadowed by expensive home prices. Real estate is not really affordable for most folks these days....
These seem to be quite common in Europe (especially the Netherlands but elsewhere like Germany too). With better cycling infrastructure, there is no reason that they could not catch on in North America.
Seattle is still a car culture.
https://www.flickr.com/photos/swoo/8148861498
Some of my other acquaintances use a bike trailer or a trail a bike instead of a cargo bike for their kids. It helps that most of Palo Alto is close to flat.
"Saint or GTFO" is a losing debate strategy with an aware counterparty.