My idea of "fuck cars" is more about reduction of traffic and infrastructure, but services like buses, ambulances, fire-trucks and such may continue operating if needed. In this instance I don't see why, a motorbike or an electric scooter couldn't be used for delivery services, in case of food; or your regular ups/fedex/dhl/usps truck for packages and letters. I'm pretty sure that they are just a minority of the traffic in urban areas.
My main gripe are individual drivers and commuters that take-up a lot of space, create a lot of traffic and are needlessly polluting the environment. I also take issue with car centric design, since everything is incredibly far away or too dangerous to be reachable by bike.
Perhaps we could have very specific licences given to these service providers that would require their companies to pay a hefty amount to operate and issue. And in case of emergency vehicles there could be a government discount or something. That way you "fuck" cars with policy. idk
How about an RX6600??? Is it a good option?