Ironically, favoring public transport (which includes a good deal of walking) and bicycling is negatively impacted by the global calorie shortage, bringing us full circle.
I would think feeding corn to a human is more energy-efficient than turning it into biofuel and burning that in an engine, although now I'm curious exactly how the two compare.
> Enclosed spaces with the general public in a still ongoing pandemic?
I'll concede that there's a point there. However - the world states with the best covid "performance" in terms of deaths/capita etc. have much better developed and widely used public transport systems.
5. Stop using private vehicles so much in favor of public transport + bicycles.
Et voila, no more fuel shortage.
... of course, this is even more easier-said-than-done for the US :-(