1. Do the terms 'ladder chassis' and 'box chassis' mean the same thing? I know that a monocoque chassis is different from a ladder chassis, because LandRovers and Jeep's have a ladder chassis structure with the body as a separate entity on top. Whereas a mid-size commercials have a monocoque structure with the body and chassis integrated as one. But, in this recent article, a man has converted a "monocoque chassis into a box chassis".http://www.thehindu.com/business/Industry/nano-takes-a-new-avatar/article4782240.ece How is this even possible? considering that a ladder chassis/ box chassis is separate from the body.?? Just as a FYI, a ladder chassis frame has very low torsional stiffness comparing to monocoques.