So many (Pree ***) idiots, so little time........

diymirage said
wasn't it the VW fox that had the "economy light" which (if I remember correctly) was nothing but a AFR gauge or maybe a vacuum gauge, I don't know, but the light would be green during cruising and turned red under WOT

Let's not forget our own Mopars had a similar deal, the "Fuel Pacer" a stupid idea if I ever saw...............

This was a vacuum switch that hooked to the fender and dash left side turn indicators, so you'd be going down the road with the turn indicator on. Many guys who don't know what they are think there's something wrong with their signals................just like this..............

http://www.forabodiesonly.com/mopar/showthread.php?p=1969835210