I don't know anything about hydrogen. perhaps it is the longer term answer?
it looks to me like the petroleum / electric combination is probably the most realistic in the short term?
100% electrical or petroleum is not the answer.
in cities (l cannot remember which one as an example) where there is a dominance of electric vehicles it does look like chaos at times.
there appears to be a certain level of market penetration reached by electric vehicles until a ceiling is hit then it levels off.
(like the Aldi example for supermarkets- they have found that Aldi reaches a certain level of penetration and that's it)
you can ban the sale of new petrol vehicles but there are a core group of people who still won't switch - look at Cuba as an example. they just keep repairing the cars forever (depreciation??)
there are people on youtube travelling the world filming themselves also in the US there are entire small cities (eg Quartzsite Arizona in winter) that live on the road. I have never seen electric vehicles used in either example.
Hertz rental are reducing their electric vehicle fleet not increasing it.
who knows, about the only think about the market is it's impossible to predict. I am no Einstein so l diversify l have a bet each way.
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