Automotive electronic maintenance records is a tiny example of what is being pushed in U.S. medicine: EMR (Electronic Medical Records). Could be very helpful if the data was entered/maintained, transferable between organizations, and easily manipulated. Manipulation would involve some form of intelligence (screening out irrelevant data, making intelligent associations).
I've got routine appointments today for Dad and me. I've developed paper "data sheets" for each of us that includes contact, physician, insurance, brief summary of medical history, list of perscriptions/over the counter drugs being used, and high points from every appointment/hospitalization. When Dad enters the hospital, staff thinks that "data sheet" is gold and when a cardiologist asks, "How's your Dad's blood pressure been running," I hand it to him. Crude, but better than any system I've seen in place.