I'm not spinning anything but just presenting some gas mileage figures that go against your contention that a V-8 Impala gets fuel economy comparable to a V-6 Camry's. Where is your proof? You haven't presented any.
The fact that I gave Consumer Reports fuel economy numbers and calle the EPA's "unrealistic" obviously means I prefer the former over the latter. But I don't care whose figures you use, so long as you use them in a consistent manner, i.e., compare all cars by EPA numbers and not with a mix of EPA and someone else's numbers.
Again, I don't care. You need to back up your implication that car quality correlates with popularity, something you haven't done yet.