tried some pulse and glide last night

[why?]

Just to add, it worked for me quite well when I cared to do it. And no, I never turned the engine off. I did tend to only vary about 10 mph or so, and i could average about 44 us mpg when i did it. But with gas prices the way they are now, I just don't care enough. And saying it saves the environment, well that just wants me to never do it again, eewww.