Another very clear signal for those paying attention.

This is an explicit concrete action for the state to take control of the economy. For now it's school buses, but the concept is as old as are state-controlled economies, which run back thousands of years. The planners in the center create a set of rules which become so burdened by corruption and incompetence that these rules make it impossible for basic human activities to continue. Then the state, responding to the clusterfucks which inevitably result, begins to explicitly move resources around to try to manually adjust for problems they were the ones to create in the first place. Because no group of planners has the ability to be as flexible as life itself (which is the requirement), they can never catch up, and the problems spiral further and further out of control until one of two things happens: 1) large-scale domestic violence breaks out or 2) people on the ground get savvy and work through private arrangements, cutting the center out of the gravy they've been enjoying. In either case, the state will fail.

Now it's busing school kids. This is the easy part. The path is set though. It won't be very long before they will step in to "rationalize" (the word is of course a lie) food distribution. Look into the history of communist regimes for what this looks like in the modern context.

We're going to have to see how the population in the US reacts to this. In the case of China and Russia (the two largest systems to go to an explicitly centrally controlled economy), there was more ideological willingness in the population to trust that the people in the center were honestly working for their interests. While the idea of state management is growing in popularity in the US, I don't think it's at the level Russia and China enjoyed when their central planners took over.

Whether popular or not, however, one thing is absolutely guaranteed. Continuing attempts to centrally control and manage the activity of the population will fail. They always do. They will fail in China as well, where they have probably the most competent central planners the world has ever seen. Even with them being quite competent, they will never have the information necessary for success. Without decentralizing (anathema to them), their failure will never be a question of "if" but "when".

Currently, the US appears to be failing the most quickly of all.