Quote:
	
	
		| 
					Originally Posted by FrayAdjacent
					
				 Driving from Austin, TX to Phoenix AZ... a little local driving, then back to Austin... I averaged 31mpg.  I was quite impressed.  
 This was mostly on I10 at ~80mph both ways.
 | 
	
 
Sounds like the same ballpark as me. I drove mainly 55-65 without AC. And I don't accelerate much over 3K rpm. I used to go to 4K with my SC, as recommended, but the Boxsters don't require the higher revs. You can drive them every way. 
I guess this is conservative driving. Probably the regular 20/29 numbers are for more aggressive driving. I'm still breaking new tires in. 
Anybody watch Live Earth the other night?  Save gas. LOL.