I find that there are two possibilities on this thread.
1. The degree of honesty is amazing and welcome.
2. The math skills demonstrated are appalling.
I prefer to believe that #1 is the case. I've been on other forums where everyone but me regularly gets
at least 10 and most of the time 11 with the occasional 12 thrown in for good measure. All of this while towing of course. Yes, gas. Yes V-10. Only thing I can figure is they have found routes that are down hill both ways with a strong tail wind.