I am known for analogies. I use them all the time to try and explain things to less technical people.

Sometimes it's building a house, sometimes it's writing a book, sometimes it's the difference between a Ford and a kit car, sometimes it's how you build a bridge.

None of them stand up to full scrutiny. You can pick every single one apart.

That's not the point of analogies. The point is to explain just one of the many aspects of software engineering in a more understandable format to the listener. Software engineering is nothing like building a physical thing. But some of the many, many problems and complexity you hit have physical product analogies.

Don't stretch analogies too far as they all pop.