This does smell a bit like a &quot;throw together a lot of high-tech buzzwords&quot; design exercise more than a real product.<p>First, series hybrids are generally a bad idea for road-going vehicles, where a mechanical link is a) pretty straightforward and b) a lot more efficient at cruise, which is where fuel economy really matters for most applications.<p>Secondly, gas turbines are primarily an advantage where power-to-weight ratio is important (much more of a concern in, say, a helicopter than a heavy truck). They are generally less efficient than diesels, especially at the size needed to power a truck, and even more so when running at less than full power. (Incidentally, diesels are pretty trivial to convert to run on CNG).<p>This approach (minus the energy storage) has been tried for locomotives and found to be lacking: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Gas_turbine_locomotive" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Gas_turbine_locomotive</a>.