Good! Cheaper, greener, and safer will be huge for the auto industry!
I wonder if that could be used for hybrid with gas or turbo diesel so no charge station needed. Run the "generator" for 15 minutes when low to recharge. Or better yet, if you can't have it charge on the fly, use 2 separate batteries so one charges while the other is used. My old F-150 had 2 gas tanks back in the 90s. Same concept.
Personally, this is the best of both worlds to not tax the grid so heavily and so drastically reduce the use of fossil fuels at the same time. You could have a 2-3 gallon tank last 4-5 charging cycles or more for "1,000mi+ per tank of fuel"!