I pull up close behind semis that pass me, and coast in their wake all the time. My glides get extended a lot, but not that much. My normal highway glides are 16-20 seconds. A drafting glide might add 20 more seconds.
I used to ride a 90 cc motorcycle that topped out at 55 mph on the level. Semis would suck me up to 70 mph, and pull me for a while. Again, it lasted less than 30 seconds.
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Darrell
Boycotting Exxon since 1989, BP since 2010
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac? George Carlin
Mean Green Toaster Machine
49.5 mpg avg over 53,000 miles. 176% of '08 EPA
Best flat drive 94.5 mpg for 10.1 mi
Longest tank 1033 km (642 mi) on 10.56 gal = 60.8 mpg
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