The bus system would almost certainly be better if it did cost a somewhat-significant amount of money, because one of the biggest problems with public transit in the US is marginalized people getting on public transit and acting in ways that are unpleasant and disruptive to everyone else using it (think about a homeless drug addict passing out on the bus while splayed across several seats; or a schizophrenic screaming incoherently at everyone nearby and threatening to kill them). Having a meaningful fare and consistently enforcing payment of that fare keeps these people off of transit and makes the experience of being in an enclosed space with strangers better for everyone else.

So use your car instead?

I see. You meant that Waymo showed up with a solution for you, specifically, not the city or the neighborhood that you live in.