[Christ]

Originally Posted by 99LeCouch

Yay, so the days of trucks whizzing by me doing 75-80 may be coming to an end! I hate when a fully-loaded semi zooms by me at 80 mph, then I need to pass the same truck crawling at 50 mph up the next large hill.

This is not likely, actually. Many truck drivers are already somewhat efficient because they hate crawling up the hills... they allow overspeed down the hills, so that some of that momentum allows them to crawl up the next hill just a little bit faster, using less fuel to maintain a higher speed. It's a key tenet of hypermiling, actually.

This, among other things, is one of the reasons I don't think this device is going to make as much of a difference as some would hope in certain applications, especially OTR trucking.