From Longman Dictionary of Contemporary Englishalong/down the roadalong/down the roadin the future, especially at a later stage in a process You can always upgrade a bit further down the road if you want. Somewhere down the road, they’re going to clash. → road
Examples from the Corpus
along/down the road• Lily shot a quick horrified look up and down the road.• No car had come down the road for a while.• How far down the road of cutbacks do bank management want to go?• Well, we want to let you know that a new church is opening just down the road from you.• There's a nice place down the road.• At one spot along the road, a lone flower escaped the flames that poured through the Three Bar Wildlife Area. 