You make a great point, Bob. I have often traveled on interstate grades in the West, with and without a trailer. In the right lane there's a line of semis going 45. Auto traffic blows past at 65 in the fast lane. Everything goes smoothly until... an idiot in an RV pulls out suddenly into the passing lane, accelerates laboriously to 55, slo-o-o-owly overtakes a truck (or two or three), and finally pulls back in. Then the 25 autos piled up behind, madder than hornets, floor it to get past the RV before the whole thing repeats. Dumb, dumb, dumb!
Slow down, blend in, save gas, be kind to your machine, and don't tick people off.