ICEs are, at their core, plenty elegant. The trouble is efficiency and low emissions are not their strong points.
I would argue that efficiency and low emissions do not preclude something from being elegant. Steam plants can also be elegant, and they can be extremely efficient and low-emissions, but a steam plant cannot be bolted onto a motor car or a small aeroplane for which a turbine would be inappropriate. All forms of heat engines have their upsides and downsides.
Anyway, at the end of the day, consumers don't care one iota about engineering elegance.
The biggest ongoing problem is going to be CO2 emissions. Given few alternatives to ICEs (EVs and hybrid vehicles are available, but unsubsidized TCO remains higher, and even accounting for carbon costs may be higher, I'd have to research that), we're going to have liquid-fueled vehicles for a long time.
The real question is where that fuel will be sourced.
CO2 emissions is coupled to fossil fuels, not necessarily gasoline, if you're talking about renewably-generated gasoline (say from biofuels, though I suspect biodiesel is more likely). And if you're getting hydrogen (an energy storage medium, not an energy source, and an awfully low-density one to boot on a volumetric basis, with significant storage and transport issues) from fossil-fuel generated electricity, you've mostly just transported the CO2 emissions problem (modulo carbon sequestering, which is presently and likely forever highly uneconomic).
I address issues of alternate fuels in a prior post, and suspect we'll see liquid hydrocarbons, of some stripe, for quite some time.
I sort of figure your first block of text is self-evident. Apparently a lot of people don't think so; perhaps I need to be much more verbose in the future.
Nobody ever went broke underestimating the intelligence of the American public. H.L. Menken.
A fair number of people can't put it together. The fact that we've extracted and re-released to the atmosphere a significant fraction of the hydrocarbons which have been sequestered via biological activity over a ~260 million year period, within a century, seems to escape a lot of folks.
As does the distinction between energy sources and energy media. And while technically fossil fuels are themselves a medium for sunlight, humans don't have to drive that particular conversion.
Besides, pedantism is one of the rare pleasures of old age.
The emissions are going to come from wherever the energy is made.
I'd like to see efforts at using energy sources to manufacture gasoline from environmental sources of carbon, making the fuel carbon-neutral. How does that compare to electric vehicles?
I would argue that efficiency and low emissions do not preclude something from being elegant. Steam plants can also be elegant, and they can be extremely efficient and low-emissions, but a steam plant cannot be bolted onto a motor car or a small aeroplane for which a turbine would be inappropriate. All forms of heat engines have their upsides and downsides.
Anyway, at the end of the day, consumers don't care one iota about engineering elegance.