Chevrolet Silverado Hybrid
21 city/ 22 hwy.
That's better than a Honda Ridgeline (15 city/ 20 hwy) the bad thing is that the Ridgeline is closer to midsize and not a body on frame "Real Truck" And it looks kinda' funny too.
Cylinder disabling nets a Hemi Ram 14 city / 20hwy
there's supposed to be a hybrid version of the Ram coming out but I haven't seen any numbers yet