These three Volvo ads from 1974 (from Found in Mom’s Basement) remind us that this isn’t the first time there was an “energy crisis” and gas was difficult and/or expensive to get.  They put this particular crisis in historical perspective and also point to (1) how resistant Americans are to change and (2) how short our collective memory is.  That is, the problems we are facing to day are not new, but cyclic, yet we manage to forget crises as soon as they are past and revert to our familiar ways. 

The ads also demonstrate the willingness of companies to capitalize on a crisis.  See a modern version here.  And enjoy the ads:

See also these public service announcements encouraging carpooling during WWII.