Slant Six mpg's?

Chrysler boasted that a Feather Duster got 35 mpg. It had a manual transmission and various aluminum parts to lighten the car a bit.

Some common ways to increase gas mileage as recommended during the gas shortage 1970s included:
1. Tune-up
2. proper tire inflation (check often)(can also add an extra pound or two of air pressure)
3. proper brake adjustment
4. easy on the starts (use a vacuum gage "mileage minder-green zone" to help with developing a light foot.
5. Time the traffic lights to reduce the need to stop at red lights (most traffic lights are timed to the posted speed limit)
6. Drive at 35 mph or less when possible to eliminate the resistance of air. Above that speed, the air resistance begins to work against the moving car. (I verified this by putting my hand outside the window with the palm up and gradually increased speed. Try it.)
7. Clean up the underside of the car by using front spoilers or air dams. (Modern cars already incorporate this idea in their designs.)
8. Turn off your car if you have to idle for longer than 15 seconds. This includes red lights, drive-thru eateries, and stopping for trains.
9. Don't use a drive-thru. Park the car and go inside.
10. Switch to a synthetic oil.

This is all that I remember from those dark times. I could have bought a 1969 Hemi Coronet Super Bee for $500 but I, along with everybody, thought gas would never get below $1.00/gallon again. We were wrong, it returned to $0.75/gallon!