"this nonsense will require valve springs so weak that they won't seal the cylinders; or electromagnetism innovations that are currently off-the-scale to overcome valve-spring tension requirments.
You will see engines with this system on the road in the same dream as you see cars with hydrogen fuel."
That would be my guess too, even in the picture the size of the two driver coils looks huge.
As far as the impracticality of hydrogen fuels, don't get me started. I have a mechanical engineering degree and actually turn a wrench on occasion, and most of these green utopia ideas just don't pass the laugh test.
Unfortunately, that is true. But one must separate the wheat from the chaff to get the grain..........