Using high mileage as a selling point isn't new as this ad from Honda clearly shows. The "thrifty Honda 50" as the ad calls it, touted 225 miles per gallon at a time when gas was cheap, this ad appeared in May of 1963.
1963 was 10 years before the first oil embargo and high gas prices were not a concern but no matter what the price was, it was still a neat idea to stress how far you could go, turning the Honda 50 into an extremely low cost mode of transportation. If you could buy a gallon of gas for 30 cents and go 225 miles, even in those days, that was pretty close to zero cost compared to most cars on the road, compared to most motorcycles, too, for that matter.
Fast forward to 2007 with gas prices close to 3 dollars, and you still have a super cheap way to get to work or school, if you don't mind blazing along at 45 mph. It may have something to do with the reason they've made over 50 million of these little bikes, even though you can't get them here in the U.S. anymore.
I came across this ad yesterday while looking for something else and I just thought it was cool.
Larger image below: