As long as the car _moves_ under its own power across the highway, its essentially not the car manufacturers' (or the consumers') immediate concern.
That's really not true. Before car companies sell cars, they pass (lots of) safety certification tests. Before owners drive cars legally, they pass a safety and emissions test. Sure, the highway folks clean up after the occasional tire blowout, but there's been a lot of work put in to make sure that the engines aren't going to drop out on a regular basis.
If the Internet was a highway, it would be covered in burned-out engines.
True, in the literal sense. 1) Software companies and hardware manufacturers have their own QA, focus groups and eval processes. Since very few people will die in the event of a burned-out engine on the Internet. Determiniation of the value of these things is up to the reader. An internal combustion engine is a much older, more widely tested thing than the "cars" we drive on the Internet and it figures that in reliability/safety numbers they win. The motherboards don't blow out, and the asphalt that makes the Internet highway works too (generally). DJ