I had a similar run though not at 120
mph but was amazed to see NORMAL numbers between 90-100
mph. That means, if you are "cruising" at 94
mph and have, say, 20 mpg instant FE and you head down a slight hill then the FE zooms up to 60 mpg. I was really surprised to see this rather than most Automatic cars that rev so high at higher speeds that FE suffers. I can't remember what the RPM was at 100
mph but it was NOT 5,000 RPM. I seem to recall that it was around 3,000-4,000 RPM though I can't remember for sure.