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meisterjohnny, your original post raises a few red flags. One second following distance/time is ~102 ft @ 70 mph, way too close to be safe, since the 90% confidence level for reaction time is 2.5 seconds.
You shouldn't even be thinking of engine-off coasting with a Toyota automatic transmission, unless you're prepared to buy a new transmission for your rental car.
70 mph is too fast for hypermiling. 50 mph is safer and more productive.
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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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