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Franklin,
This seems a slightly futile discussion ...BUT...
It is relatively simple to build vehicle that go 50%SpOfSound and here in Europe (Continental or UK) there is plenty of experience in building engines (diesel/petrol/lpg/jet/rocket) that will produce the comensurate power to project the vehicle.
But just as with Drag racing where the technology and skill is in transmitting the power as quickly as possible, over here we like to apply it to road circuits in general.
A Saturn V launcher can achieve 15 miles in the vertical within 2 mins but so what......
IanC
PS
I heard a story from the US where someone found a pile of scrap metal under a cliff. Nothing was done about it until they discovered human bones. Local police investigation discovered parts of a military plane so called in the military aircraft accident team.
Further investigation showed that about 30miles away someone had strapped a small solid fuel retro-rocket to their GMC pickup and fired it.
After about 2 miles the 'pilot' obviously bottled it and applied the brakes. Long streaks of of rubber where followed by 4 parallel cuts in the tarmac. After a few miles there was no other evidence until the debris at the bottom of the cliff.
Source completely unknown...but probbaly an urban legend
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