Yes to all but the last 2. Reducing meat consumption for a communist society is as simple as allocating less resources to meat production or stopping it altogether. Reducing car use is also simple if you have efficient city designs. For example, the USSR made plenty use of micro-districts (today they would be called “15 minute cities”), which allowed the population to go around using public transport. And the Chinese HSR system allows chinese citizens to travel around the country very efficiently and have vacations and such.
Yes to all but the last 2. Reducing meat consumption for a communist society is as simple as allocating less resources to meat production or stopping it altogether. Reducing car use is also simple if you have efficient city designs. For example, the USSR made plenty use of micro-districts (today they would be called “15 minute cities”), which allowed the population to go around using public transport. And the Chinese HSR system allows chinese citizens to travel around the country very efficiently and have vacations and such.