I do keep hoping one of these will succeed though: we have many different things that move and need multiple solutions to kick our fossil fuel habit.
Walkable cities with train systems are ideal but will take decades to build out, plus at least in the US, we have predictions of people moving away from cities
Battery seems to have won best technology for personal transportation, whether scooters, bikes cars. However will take a couple decades, or more in the face of conservative resistance to change
But what about all those trucks, aircraft, construction and farming equipment, shipping, military vehicles? That’s a lot of fossil fuel usage and a lot of experiments but no solution in sight