In English, the expression "let's cross than bridge when we come to it" exists, to indicate that the speaker doesn't want to deal with a particular outcome because, as that outcome may not happen, it could be a waste of time. For example,
"What happens if our car breaks down on the way to the shops?"
"Let's cross that bridge when we come to it."
What's the best way to express the sentiment of this expression in French?
