According to this August 08 issue of Road & Track...The Solstice GXP is one of the 10 Hottest Cars Per Gallon.

The article is entitled "The Fast & The Frugal".

RoadandTrack.com -- Cover Story - The Fast & The Frugal (8/2008)

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2007 Pontiac Solstice GXP Deep/Ebony/Silver Stitching (WOW)
2006 Pontiac Solstice Mysterious/Steel/Sand F1K(#78) 2nd owner, purchased with 1,400 miles, traded 3/07 for GXP
2003 Infiniti FX35 Brown/Burnt Orange
2000 BMW Z3 2.3 Impala Brown/Tan/Tan
1984 Pontiac Fiero SE Red/Tan