Ray LaHood stepping down as U.S. transportation secretary

[SteveG1988]

All wheel Drive (or AWD) is when all 4 wheels are driven at the same exact time, for example on a Subaru. Some allow you to turn it off, others don't.

4WD or 4x4 is for off road use only, you cannot turn it on except on bad roads due to the way the transfer case works, basicaly all 4 wheels will turn at the same exact rate, and that will cause excess wear to the components as there is no center differental. Driving at speed will damage it more than driving it off road.

That is why you cannot drive a 4x4 pickup on the road without damaging the transfer case, if the wheels are allowed to slip while offroad, that will prevent wear.

[kphoger]

4WD or 4x4 is for off road use only, you cannot should not turn it on except on bad roads...

Is that what you meant?

[cpzilliacus]

[Humor] TheOnion.com:  Ray LaHood Resigns Following Mysterious Disappearance Of Country Road

Secretary of Transportation Ray LaHood announced his resignation from the Obama Administration earlier this morning following his alleged involvement in the recent disappearance of U.S. Route 13.