Given how inefficient ICE is to begin with, I can't imagine something like this being used for any transportation that can be easily electrified. This is really for niche cases like air travel, I assume.
ICEs are incredibly efficient. Electricity is only efficient if you only care about kwh delivered to the car doing to the wheels. The efficiency of getting kwh from the grid to the car puts it well worse than most battery setups.
Grid losses are a few percent with modern tech (which exists in countries rich enough for EVs). Charger losses are another few percent. If you were to burn the same fuel in a closed cycle turbine you'd get about 1.5x the raw energy to the wheels after losses, but the turbine also doesn't need to use as high emissions fossil fuels. Regen and other efficiency features that are tolerated on EVs but not ICEs bring it up to about double well to wheel.
Then you can also provide 50-90% of the energy without it ever being made into AC by parking it under $1000 worth of solar panels.
The heat engines at fixed generating facilities are typically much more efficient than the engines in automobiles. Nearly a factor of 3 more efficient in some cases.
