That is an interesting development, but reading the referenced article tells me the "generator" is really an inverter. This is what it says:
" The generator works by taking energy from an onboard lithium-ion battery. The vehicle’s engine may need to be on to assist in charging the battery."
If you were to use it to run your RV's A/C, after a while the main engine would need to be on to keep up with the power demand. That probably won't be very efficient to run all night, but probably pretty quiet. Maybe you could also get around nighttime generator restrictions with this system
.
David