I think, on the public information side, the path to the end of ICE is shown when Tesla did their battery day presentation road mapping a -50% cost battery pack in 5 years and received little push back, followed by VW basically making the same presentation a few month later. The advantage in total lifespan costs today will covert into superior production cost for 300mile vehicles at -50% battery pack prices.
Produced fuel takes so many steps and a long complex supply chain, that never were never cost competitive in the fossil fuel era. Integrated hybrid propulsion is a goldberg machine and only provide advantage in cost/range on a increasing higher end.
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The real superiority of electrical power is in less measure characteristics and it takes a bit more time to make full utilization of this. The first wave of electrification with the building of the power grid did not get it's potential exploited remotely fast at all, and there was very little the cost advantage of building power stations, high voltage wires to cover the country compared to using engines at point of use, while using existing solid and liquid transport networks. A conservative at 1890 can point to those new, expensive centralized systems "controlled by a clique of rich" pushed by loons like Tesla with new hazards of electrocution and fires across the entire surface of the country and recoil in horror. We can even use some arguments here where the old energy system of horses, local coal, wood and oil gets replaced by a single system only means end of development.
Electrical power's advantage is in flexibility, efficiency, scalability and cost ultimately won out the first wave of electrification with energy provided "on demand" everywhere instead of all the complexity of running transmission belts, shafts and axels or having literal pipes everywhere. The advantage of those "soft capabilities" is hard to measure and hard to exploit but has deep learning curve of providing value that makes the value proposition very different before and after adaption.
The internet shows, as with electricity, that real technological change takes time and imagination.
www.bbc.com
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Superiority in "soft capabilities" (home charging, low noise, vehicle handling, reduced internal space constraints) have already caused significant adaptation of electric vehicles before cost parity in key measured specs.
So what it is with the new F-150? Vehicle to grid, vehicle to load, energy arbitrage are all advantages possible because of battery technology. As such capabilities become more common and standardized, an entire new ecosystem of capabilities built on this can exist.
After starting this I think one thing that ought to have some government intervention is standardized electrical interface for range extenders (charge on the move) on top of other standards. With standard interface for such subsystems one, flexibility can be maximized to fit different needs: one can add a engine, another battery, or other energy system as needed. Imagine things like fold out solar package for traversing the desert.
With electrical architecture proliferation, I'd expect space beamed power to be a thing within a few decades (though probably in the solar/cloud obscuring band at start) and the idea of range anxiety gets flipped.
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We also have not remotely reached the developmental endpoint on skateboard architecture. I'd expect future vehicles, as battery prices go down and thus aero not as important, to have MAXIMUM internal volume as we can already see in some designs already.
With electrification I'd expect personal vehicles to converge towards RVs in terms of habitability and customization. There is no need for a whole host of mass produced integrated system when you can just plug whatever you want into it. This will really kick off when level 3 self drive or at least reliable collision avoidance tech becomes available, so that safety, the last hard constraint, stop having much effect on design.