You know what you might do if you were a problem solver like Elon? You would identify the problem you just described, then you would start a company that operates van-sized buses that could easily use the Boring company's tunnels. You pick up 4-10 people and carry them through the tunnels and let them out.

For bonus points, your vans could be autonomous.

Or, you could, you know... complain that tunnels aren't a complete solution.