What kind of gas mileage should I expect on a 09 CTS-V while cruising at 75 mph? I have a 06 SRT8 and a 03 Saleen, so I'm aware of what a gas guzzler is, :D but the EPA rating of 15 MPH highway (with auto trans) on a V seems a little low for not being in a boost situation. Thanks a lot.

Correction: I brought the V home on 1-17-09, the window sticker reads 12/18. Love this machine.

My V is brand new and I got about 200 miles crusing for 4 hours at about 75mph... but I did open it up from time to time.
Gas milage is horrible if your drive it like its supposed to be. Agressive driving yields about 130 miles