It's finally happened, at least in the area where I'm at. Gas prices in Chicago are over $3/ga. Prices shot up by over $0.35 in just a day or two. Costco had regular & premium for $2.79 & $2.97, respectively. Guess which grade I bought? Most gas station prices are about $2.97 reg and $3.17 prem. Funny thing is that most places in Los Angeles, CA are still under $3/gal (about $2.69 or so). Prices in LA are generally about $0.15 higher than Chicago.
BTW, I had just come back from a short road trip from Chicago to Niagara Falls, NY then Mashatucket, CT (Foxwood Casino). I drove a total of about 1900 miles. Gas prices ranged from $2.59-$2.79/ga for mid-grade. Averaged about 20.3575 MPG (low of 19.754mpg & high of 21.544mpg) with the A/C on the entire time and some aggressive acceleration passes.