Fraid i don't do simple, i leave that to all the **** car drivers who think they'll ace they're fuel consumption by doing 55mph in the inside lane, (if your lucky), and the other muppets in trucks who think they can't ease of the gas for 2 secs to let the faster truck past, and yes, i do ease off when needed, but then i'm not gonna sit behind another wagon who has to slow to 40mph going uphill, then speed back up once up the hill as i'm along side him/her, as i know that at the next hill, i'll have enuff to clear him to get past.:doug:nana