I'm still talking about getting others to listen like the OP.
People are stubborn. On another site related to the motorhomes I posted this link:
http://www.catrvclub.org/Understanding_Perf.pdf
Now, I'm pretty sure Caterpillar knows what they are doing. Yet the people there were more apt to say it did not apply to them. They would say silly things like "Well I always drive 75 mph and I just don't believe it". That's a made up quote but you get the idea. It's an uphill battle to get people to listen and LEARN.
After too much of this type crazy talk I have to just "walk" away. After awhile I'll return to keep plugging away at them hoping they'll listen.
P.S. Notice the weights of the vehicles we're talking about. An equivilent sized gas motorhome will be outweighed by 10000 lbs minimum and sometimes as much as 38000 lbs. (do you REALLY need granite floor tile?)