A: John quit his well-paid job to concentrate on his startup. What do you think?

B: The man has vision and guts. Somewhere down the road I think he’ll make it big.

Note: Literally, this idiom can mean “close to someone or something else that is located on the same road.” As a metaphor, it means “at a future point, in the future, in a few years.” For example: I do want to get married, but down the road, not any time soon.