A centralized medical records system is more political, social and procedural than any sort of technological revolution. The technology to create one has been around for decades.
Funnily enough Microsoft was pushing down the centralised health route a long time back, but gave up because everyone was worried about them holding centralised information. This was back in the days were passport was trying to be rolled out as a single signon solution.
The more things change, the more they stay the same...
Although I'd love a self-driving car, and I think it will certainly save a lot of lives.