It is impossible to build public transport that gives the same freedom of movement as a personal vehicle.

That is false. In areas with heavy traffic you can give more freedom of movement. In the typical city without congestion (including US suburbs!), while the car is better, it still doesn't have to be enough better to matter. That you think the car is always better is a reflection on the bad service you have had on public transit.

Public transport runs on a schedule and you have to adapt to that schedule. I live in a place where public transport is good, cheap and safe. You can never achieve public transport that could even compare to the freedom of movement a personal vehicle gives you, and that's not the purpose of public transport.

> That you think the car is always better

Make your arguments without inventing what other people say and you will make better arguments.

But that vast majority of the time, in the US, anyway, the car is used just to get to work and back, not people exercising "freedom of movement".

It seems to me it would be preferable to have mass transit for regular commuting, combined with perhaps some sort of rental system for those times when you need greater flexibility, or need to haul lots of stuff, etc.