Hi
MMmmmm...what do I think????....
Without trying to sound condescending, coz that's not what I do...

I think the designers are all wrapped up in what's in front of themselves....
How to "break the mould"...First, look at the energy produced in a car, and HOW it's produced...itemise it
1/. Heat produced from burning / exploding (Petrol burns, diesel explodes)
2/. Electricity produced from a generator
3/. Heat from frictional sources by brakes , belt driven ancillaries, and gear driven components
4/.Heat from superchargers, turbochargers etc.
5/. Heat from friction from the passage of the vehicle through air
Well, just look t the whole deal, and there's plenty more to add to the list...
What do we do?....
We try to cool the whole damn' lot down?????? Have you ever heard such a lot of nonsense in your life???
We try to cool the very contraption that feeds on fuel....WHAT?????.....you feed the damn' thing with fossil fuel and try to stop it heating.....WHY?????
You add components to pump coolant, drive it with belts????...
You try to generate electricity via a magnet and a bundle of wire, and drive that ridiculous contraction with another flipping belt????
You try to cool the insides down with another pump...YES....ANOTHER pump, driven by more belts....
You try to brake momentum with a scrubby bit of fibre rubbing on discs?????
I'm currently laughing my socks off, wondering why the so-called "modern" designers have yet given up hitching a dead donkey to a cart, thrashing it with a whip while crying out "come on Neddy, B***** you!!!!
Getting the picture????
Look at the wasted energy in dissipating all that heat with pumps driven by elastic bands, and dissipating braking heat into the air, and, for that matter, driving gearboxes and axles, and trying to cool the lot down....
For a start, the bearings in everything are made with the wrong components, the engine is an antiquated design that just gets patched and re-patched.....IF.....IF IF IF you must stick to the same engine design....let the beggar go wild...nobody has yet made anything that's got to the same heat as the sun, so there's a limit....Use the heat produced, and convert it...Energy can't be created or destroyed, BUT we convert it all the time....THINK outside the box.....With better manufacturing tolerances, you don't need such power loss in an engine, requiring immense oil pressure...a GOOD engine runs lower pressures...Re-arrange the engine to cut out the propshaft, and drive direct to the wheels with a fluid transmission, with the motor placed between the rear wheels....no gearbox....with the motor actually running in two halves with the crankshaft split so that one half drives one wheel and the other half drives the other side....Use ceramic bearings internally, as they are better than steel, chromium bores in the engine to produce more resistance to wear....and why use outdated lubricants?....hell, the list goes on, but with higher heats and less friction, you get more efficiency, and, hells teeth, without messing around cooling water, you can run air-cooled with the heat harnessed directly to produce energy required to generate electricity....
Hell, I'm bored already....LOL
Go on , have a go....we can all do it!
Cheers
Helen