I'd be tempted to say that automotive just-in-time processes are, if anything, more impressive in terms of the industry integration. There you'll have hundreds of suppliers coordinating so that custom builds roll off the production line in an arbitrary order, with no more stock in hand than there are builds in the system for the next shift or so. I've seen it at work at BMW, and it is frankly terrifying to consider what the supplier contract terms must be like; if any one of them has a screwup as simple as packing their parts onto a transport in the wrong order, it has major cost implications.