Now we are into cars and planes

Cars and planes are computers My cousin informs me that 60% of all non mechanical repairs on cars are computer related. The car comes in and some gadget will not work, they try swapping parts until it works or if unable to solve it swap the car's computer. They don't have the expensive equipment that will simulate each device and then test the circuit. The manufacturer's test the returned parts and 40% turn out to be OK. Maybe that's why there are no more "service stations" any more. I seem to remember that some legislator wanted anybody who claimed to be a "service station" to offer service. I know McDonnell-Douglas was testing the same thing for fighter planes. Most of the time they swap boards. They have developed test benches that test the boards. I remember that computers were swapped in the planes and then off you go. How would you survive a disk crash? It's interesting that were haven't yet heard of any computer virus problems with cars and planes. Mike mmcfadden(a)cmh.edu