guys, i am aware that it is the nature of the business to copy ideas from other companies, i was merely pointing out how it seems as though chevy has taken the ride on ford's coattails (more than a few times.)
as for toyota having a 4 door pickup truck a long time ago, the sport trac is not a 4 door pick up truck. the ranger and the f-series are pick up trucks, the sport trac is an suv with an open trunk - its still an explorer.
and as for nissans copy of the sport trac a few months before ford, well, a few months doesnt mean anything. the sport trac could have been designed 5 years ago, and the nissan 4 years ago - release dates are irrelevant. just look at the the new 2002 explorer, it should have been out long before it did come out (we wont mention that ford kept botching them up), so chevy got to release the trailblazer to compete with the new explorer at the same time.