I didn't think you needed to wear shoes to drive. I just thought you couldn't be in something slippery like socks.
When I lived in Florida I drove barefoot all the time, especially to and from the beach. It didn't seem safe to have those flip-flops on.
That's not silliness, BTW. That's the truf.
I don’t know about other states, it is illegal in mi to drive barefoot, or in any shoes without a back.