That actually can work out, because you gain back more from running the engine under precisely optimum speed and power conditions for every load, using sensors and computers to make small adjustments to engine timing.
The advantage diminishes for smaller engines. For big engines, like on locomotives, it works out well. That's why Diesel-electric locomotives have been the norm for more than fifty years.
They are actually claiming the "optimal operating point" advantage in some of the stories that have been written about their engine.
I'm thinking "scam," or - more charitably - an outlet for wealthy wishful thinkers who lack a high degree of technical knowledge.
True, except that automobiles need to accelerate relatively quickly, which means batteries, transmissions, or operating outside of max efficiency, or both.
I’m just saying that thing is BS. It looks like an xbox or something.