If handled properly, our 3.0L Vulcan pushrod powered 1990 Mercury Sable Wagon could sustain 30+ mpg highway. This is something that none of the current crop of popular SUVs can manage, and the crossovers are closer, but most still suck gas terribly (IIRC, the new Ford is EPA rated for only 24 hwy). We should be demanding -- and getting -- wagon utility in vehicles that perform BETTER than a wagon of 18 years ago. But no, we get "sport" utility vehicles that provide roughly the same utility (unless you really need off-road access) but suck down 2x the fuel. And now gas costs $3 per gallon...