I have a VOLT myself so I appreciate this.
Two notes though.
1. The VOLT does burn SOME gas, especially when it is cold (under 38 in some cases). Even with a full battery, it will run the engine purely for heat (though it does use the "power" to charge the battery during this heating process) Now that it is the winter, I probably burn 3-4 gallons a week due to this, driving 42mi round trip VS. 0 in the spring/summer/fall
2. OPEC is laughably underwhelming today and is a fraction of the power they use to be. So I enjoy the plate and most will 'get' it, but the message is a bit dated now!