.. Good luck indeed to future generations having to deal with global warming and diminishing sources of energy - let's not forget that the internet uses a massive amount of energy itself. .
Our culture wouldn't be where it is with the mobility we have. I doubt future generations would want to be with out the benefits of that culture. Cars, the internet, drugs are neutral things - just open to abuse.
I see a much more positive picture - I see things getting better, people starting to behave more responsibly, roads being closed, more bike lanes, better conservation, more awareness - probably in a large part to the repeated protests and efforts of people like yourself - just takes a bit of time and often seems painfully slow!
Currently, public transport is a joke. I'm hard pressed to find a medium-distance journey that isn't cheaper by car. Most of them are shorter by car. That's really the wrong way round.