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The Evolution of Cars
Elsewhere I saw this analogy and liked it.
Piston-engined aircraft > supercharged piston aircraft > turboprops > turbojets
Try this....
ICE vehicles > gas/electric hybrids > plug-in hybrids > fuel cell vehicles (distant future)
Trying to say technology is like a slow winding river, progressing a little at a time.
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All is vanity
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