Why didn't Hummer go with 2WD w/selectable 4WD?

[f5fstop]

Originally Posted by aetherH3

I'm curious as to why they decided to use an ALL-TIME 4 wheel drive system when they could have used a 2 wheel drive system for normal driving? It would increase gas mileage which would make the H3 more appealing to customers and also bring down the quotas (whatever its called) on the MPG ratings for GMs line up. After all, the H3 was built as a more efficient Hummer. It would also increase engine performance because of less drag. I imagine our H3s would be pretty peppy only having to turn two wheels instead of four. Not that I'm complaining, just wondering.

Because it is a Hummer and Hummers have full-time four-wheel drive. In addition, the extra fuel mileage is not as great as people believe. Even with a part time 4x4, you still have the gears turning creating a drag and producing friction, thus reducing fuel mileage. I was told it would equate to a max of 1 mpg (per some testing).
Drive one without the front prop shaft...you won't notice much of a difference.
Next, someone is going to want a two-wheel drive only H4.