Will, nice job with the 20% improvement versus last year in much more adverse conditions.
I believe that P&G is a more efficient way to do an economy run than lean burn, and that
lean burn engines really don't have an advantage in these scenarios. You could probably do almost as well with an EX engine vs. an HX.
That would explain my Insight's ... ah... underwhelming performance at both of the economy runs I've brought it to. Don't get me wrong, it's very good, but in the Subaru I saw > 200% of EPA. Not so in the Insight.