Well they could'nt be more wrong about Isuzu. Not only is it the oldest truck company in Japan, but still today they produce more Diesel engines than anybody else in the world.
My take on Popular Mechanics comments were that they were mainly talking about Isuzu's presence in the US. At this point I'd think Isuzu commercial has far too much of a following around the world to have them considering totally closing the doors in Japan.