I believe there are plenty of people paving the way for our post-carbon world, building a new and clean world from the filth left behind by the baby boomer generation.
Currently millenials do not put 2 and 2 together when it comes to climate change and their personal habits of consumerism, we did better in the 1970's after the crisises of the time at turning lights off when not needed. But this time round we have people using sensors and things like LED lights to keep the energy consumption sensible.
The only way for countries like the UK to meet their emissions targets and air quality targets is to get rid of the targets (Brexit) or to get serious about electric cars. Right now one energy company is converting lamp posts to charging points, so soon on-street charging will become very easy. A small step but an important one as it makes the impossible possible and at affordable cost. So you might just get an EV because that is how it works and you just charge up every time you park next to a lamp post.
There are only four petrol stations inside the congestion charge zone in London, there used to be far more. Imagine a time when there are none and you have to go to a motorway to find petrol or diesel for your classic retro vehicle.
Even General Motors are taking EVs seriously.
As for the disposable bag, try visiting the UK. They went extinct when stops started charging for them. The other day I found a hoard of three in a drawer. In former times people would have small cupboards full of the things. It took a long time coming, but the end of the disposable free bag was survived by retailers and consumers alike.
I think that EV cars will be like flat screen televisions and ICE cars will be like CRT monitors in not too many years to come. We didn't initially get a better picture with flat screen displays but those richer colours did not save the CRT, even if there were no 'dead pixels'.
In a matter of time the batteries will be integrated into the frame or the wheels or even the furnishings and these EV cars will be a far simpler product than those ICE things. The supply chain will die out for ICE and this new post carbon world will start to happen. Watch and see.