If transportation is necessary, find ways to mitigate emissions as best as possible. If emissions are unavoidable, use the thing with least emissions (small-tired lightweight vehicles) until you research a solution to a tire material that isn’t harmful (which is being worked on I think). Busses mitigate a dozen or two cars. Local rail mitigates a few busses and a few hundred cars. Essentially, personal vehicles should be small and lightweight, and essential mass transit or city services should be large enough to serve an entire area.