Yes, you can do that. But, its horribly inefficient even though its renewable.
Solar PV is at most ~15% efficient, then you take the electrolysis efficiency hit, and I don't even know what that is, then you take the ICE engine hit on top of that which is probably around 20% efficient in normal use, and then add the compressing power on top of that. You're talking about a MASSIVE solar array to power a car. At least 5X the solar power vs an EV. You're much better off using that solar energy to charge an EV.
Edit, forgot another loss.
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