As mentioned in my original post, Takuma Sato is definitely being used by Honda for development of the new NSX. Recently, there have been two other racing drivers that have had a chance to take the pre-production NSX out for a "quick" spin.
September 30, 2015 - Graham Rahal (IndyCar driver) posted this on Instagram:
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October 9, 2015 - Peter Cunningham drives the new NSX at Thermal Raceway during NSXPO 2015.
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October 21, 2015 - Takuma Sato tweeted:
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