I was thinking more in terms of reliablity from the materials side, as well as efficiency. And I believe they are smaller and lighter.Ivan Seeking said:However, that misses the point. With a hybrid, the load on the turbine can be made constant, which in principle makes it appropriate for the application of basic transportation. The electrical system buffers the load.
I know ORNL was doing R&D on materials and components, and that was years ago.