reply to post by TarzanBeta
You are correct, no matter how offensive you're trying to be, however, speed limits are there for a reason. Part of that reason is fuel mileage. Back
in the Gas Crunch days of the late 70's they implemented the 55mph speed limit to save fuel, because at the time, most cars had a three speed
automatic transmission, and 55 was the most economical speed on average. Modern vehicles, however, usually get their best mileage at a sustained 70
mph, due to their taller top gear. The 'sweet spot", fuel economy wise, for most engines is arount 1200-2200 rpms, most modern vehicles are well
below that at 55, causing more strain on the engine to maintain that speed. Therefore if the speed limit is 65, and you're not driving a deep-geared
muscle car, then you'll get better mileage at 65, driving under it won't save you any gas. The old adage "the slower you drive, the more gas you
save" is a left over from the 30's when the Model A Ford was the most common, it was true then, since 45 horsepower and short gears are only going
to get worse fuel mileage the faster you go, so running 35 is ideal. However, say you're driving a Honda Civic, pretty common car, your highway
mileage at 70 will be around 40 mpg, but if you went the same distance at 50, you'll get around 30 if your lucky.




