So what I’m hearing is, if I build my own electrolysis station driven by a solar panel array, there’s quickly going to be a glut of extremely cheap hydrogen cars coming out of So.Cal…
That's the fun thing - after you make the hydrogen you have to compress it to 10,000 PSI and cool it to -40 to actually get it into the car. And make sure the pumps, pipes and cooling gear are all made of materials that won't be destroyed by exposure to high pressure hydrogen.
It'd probably be a lot cheaper and easier to gut the car and replace the fuel cell and tanks with batteries and a charger.