Bring up any of these places in the OSM cycle map view to see how connected they are. Milton Keynes is famous for having a very extensive network of cycle routes, but you might not notice when driving as they are a completely different transport network than the main roads.

Not sure if you were using MK as a good or bad example of British suburbia?

One ‘test’ we could do would be: find the most American-like suburb and ask it for a route to the nearest shops or café, pub, supermarket, hairdresser, etc - if it gives you a choice of a few easy cycling routes or regular buses then it’s probably not as car dependent as conservatives want to think it is.