In 2040, if I'm still alive, I'll be almost 90. But, given my average health, I'll surely be dead, as will many other animals and humans, given current pollution and climate degradation, if it weren't for the murderous and warlike madness of the so-called humans who outbid us.
But if we give up our egoism, in particular by abandoning individual means of transport such as the fossil-powered car or the all-too-easy airplane, we could develop numerous modes of public transport - trains, streetcars, buses and coaches - and recreate a dense enough network to encourage useful or leisure travel, as well as favoring transport by boat instead of airplane.
All this can be developed by collectivizing the means to produce them.
One of my grandmothers, almost 111, could still jokingly say: "I've lived through 3 centuries, the 19th, 20th and 21st", because she lived a healthy life, almost self-sufficiently with her husband, wounded in the 1914-18 war.
On the other hand, at the age of 10, between the years 1900 and 1910, she remembered being amazed by her first automobile trip when a wealthy neighbor drove her 2 kilometers from school to home. At the same time, the students took turns carrying a log of wood in their bags to heat the school in winter. She would surely be sorry to know that today this "Wonder" has contributed to the destruction of the Earth. Or to learn, as I did, belatedly that the American industrialists of the early days of the automobile bought up public means of transport, only to abandon and destroy them immediately to develop their own financially juicy industries, and that the Europeans followed suit.
My father, born in 1920, could still take 2 or 3 local trains or streetcars as a child, with connections, to travel 40 kilometers from Dunois to Perche-Gouët".
We can recreate this spirit, this frugality and good living, even this joy of public transport.