I have been in engineering all my life and have said for years that the best replacement to take over when Petrol & Diesel runs out is Hydrogen which we can obtain from Water (H2O) and the seas and Oceans will supply the water. Petrol Stations would just convert over to storing liquid Hydrogen.
This man is demonstrating what the well known International Company 'JCB' have done.
Much better than Battery Powered Cars.
What weight would a battery be for a Jumbo Jet??
That would be totally out of the question!
But Hydrogen will allow us to continue Flying.