First a hearty hello from Houston,TX.
Why aren't there Diesel Hybrids in F1 like some of the LMP cars. I was watching the 24 hour race this past weekend and was just amazed at the Audi R18.
Diesel would never be allowed in F1 cause of the lack of noise... F1 is a bit up it's own backside like that. But either way, given the nature of F1 races at under 2 hours versus endurance races, then the diesel mileage benefit would not have so much an effect in F1. I still believe petrol engines have more power potential (the diesel speed advantage in LMP is a product of how the regulations benefit them rather than a natural advantage, imo) and F1 is really still going to just be about power, unless massive regulation changes were to be made (on top of the 2014 changes).
LMP is going a very good direction in terms of engines though, new regulations are due to come into force with MUCH more emphasis being put on energy recovery but with relative freedom given elsewhere. I believe this will attract more manufacturers to LMP1, something that is harder to see happening with F1's new regulations.
I agree that the R18 is one amazing racing car though, it was incredible watching the onboard footage from the hybrid cars at LM.