[vtirocz]

I'm surprised by your comments on the 2015 Prius highway fuel economy. Is it the "v" (ie. 'station wagon') model or the regular Prius?

In the regular 2015 Prius, it's rated at 46mpg highway from the EPA tests, while the Camaro is rated at either 27 or 25mpg depending on if you have an auto or manual. This is primarily from data on their HFET cycle, but it's at least one datapoint for the two cars driven on the exact same cycle and from my experience, both cars match their EPA rating pretty well.

My wife has a 2014 Prius v (station wagon version) which is rated at 40mpg highway. We always take that on longer trips and it's very easy to exceed that even when driven more aggressively - we typically get around 42-44mpg regardless of how it's driven in city or highway. Unless something is wrong, I have a hard time believing the Prius is averaging in the upper 20s / lower 30s for fuel economy.

The Prius v we have has 100k miles on it and still averages lower/mid 40s no matter what drive cycle. In comparison, my Camaro's best full tank average is around 28mpg (I think the center information tab had best "50 mile ave" at ~32mpg during that same drive).

Regarding your question, it would take a serious budget for R&D/design/fabrication/testing that you would never offset in saved fuel cost. This would be a huge undertaking even for the OEMs to pull off, particularly from an integration standpoint. I'd look to the Corvette to see what technology is in the pipeline for performance car hybrid setups (which will be optimized for performance, though may provide a fuel economy improvement as well).