Having dismantled some electrical\electronic components from aircraft I am surprised at the poor design, component quality, & build, we built cars for the rally championships for over 20 years in another business & I say that a alternator & most electrical components in WRC cars are built to be as light as possible & reliable, as to the operating environment you are correct there is no comparison, under bonnet with turbo engine heat, 120MPH over rocky terrain, through water & mud for starters then the heat cycles.
Personally I think you are just here to wind people up