How the Tesla Model S is Made

I would love to have a Model S :-)
As I said before, I drive a Toyota Prius now, but, however good that car is, it is more complicated than I feel should be necessary. The drivetrain of that car contains two motors: a petrol engine and a electrical one. While the engineers of Toyota did a great job in joining the two motors (you really can hardly feel when the petrol engine takes over from the electrical one), it is more complicated than only a electrical engine. That should be simpler, cheaper and more easy to maintain...?