Eventually vehicles will all be self-drive and controlled by software written to satisfy legislated guidelines and who knows what kinds of fuel- or mileage-based rationing. Widespread cameras and recognition software that can interpret bodily actions as well as mere facial recognition and tip police to the early onset of some kind of anti-social behaviour are a no-brainer. Cash will be eliminated, and gradually additional transaction information (nature of business, nature of purchase, location, etc) will be collected and sifted by AI tools.
At each point, the usual excuse will be advanced: "we already do all this other stuff and the world didn't end; what is one thing more?" ("Frog boiling".) All only if people keep permitting it. It might sound absurd, but here are a couple of things: all the tech for the short list above already exists, governments are already musing about some of it (eg. elimination of cash); and there is no reason to expect the people nibbling at liberty in pursuit of safety to suddenly say, "Well, that's enough; we've achieved everything we wanted." And attributing pursuit of safety is the charitable view. Some people really do like to be in control, and can be quite iron-fisted and unpleasant about it. Those who doubt me should examine the chickenshit politics of university faculties; strata and other ownership councils; clubs and other voluntary associations.