A mysterious viral advertising campaign has surfaced on television and the Internet this week, which has been further amplified over the blogosphere.  In fact, flickr , facebook , YouTube , and blog sites have surface around it. A simple green background shows the number 230, with a winking electric outlet instead of the zero. Below is the date 8-11. AdAge determined that the source of the campaign is none other than GM, but the automaker and its ad agencies won’t say what it means. Speculation has varied on its meaning from the MPG of the Buick plug-in to the MPG of the Volt or even something to do with charging at 220V. GM is holding a press conference in Detroit on August 11th, and yes I will be there. Reports quote sources as saying the number will be the Volt’s official MPG rating, but how they came to it remains a mystery; highway, city, average, none of the above?  And if so how was it calculated?  The EPA city cycle is 11.04 miles at a 21.2 mph, the highway cycle is 10.26 miles at 48.3 mph.  The car goes 40 mile without any gas, and 78% of drivers drive less than 40 miles per day (utility factor).  Do your own math. We can have fun guessing for now, but be sure to logon to GM-Volt.com on Tuesday morning and we will have the answer as soon as it hits. Plus, if you have any questions you want me to ask the Volt team and execs while I am there, leave them in the comments. Source ( AdAge ) Related posts: How the Chevy Volt is Expected to Beat the 100 MPG Designation The Chevy Volt’s Electric Range is 40 Miles in Both Highway and City Driving New 2011 Chevy Volt Picture Gallery

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