So I rolled in to my local Safeway station to fill up my truck with diesel this morning. The guy hooks me up and then grabs a clip board and goes to the back of my truck and starts writing down the license plate. I ask him what's up with that. He tells me he is supposed to write it down because they have the new B20 blend biodiesel and they're trying to figure out if they can lower fuel taxes so he has to write down the license plate and the gallons pumped. I looked at the form and it was clearly labeled as Oregon Department of Transportation but the smaller print is illegible (probably from too many copies). So I'm having a bit of a hard time swallowing the story he gave me and I can't seem to find anything on the net about it. Anyone else having a similar experience? I'm finding it difficult to think they're figuring anything useful out with those data points. I figured I wouldn't worry about it too much right now... heck... at least its proof that I got that new fuel on this date in case my truck goes gunnybag by running it.