> I will admit that my turbine experience has been with steam and gas 
 > turbine marine propulsion, so I may not be aware of methods by which these 
 > problems can be solved in an automotive application.
Kevin,
 Those problems have NOT been solved in automotive applications, which is 
exactly why they've not been successfully applied there. (yet) Further 
development might yet put turbine engines under the hood, especially in 
hybrid designs, but not anytime soon.
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