Tony might have a point. From what I know, none of them come with one-piece track except the AFV Club.
That being said, you have the Initial, Early and Smart Kit.
Your best bet might be the Smart Kit, but it's got a gazzilion pieces.
http://www.greatmodels.com/~smartcart/cgi/display.cgi?item_num=DML6386
or the Early, which will have less pieces.
http://www.greatmodels.com/~smartcart/cgi/display.cgi?item_num=DML6165