我们计划周末开车去海边公路旅行，沿途会在几个小镇停留。

We're planning to go ___road-tripping along the coast this weekend, stopping at several small towns.

我们计划这个暑假来一次公路旅行，沿途探索各种国家公园。

We're planning to go ___road-tripping this summer, exploring national parks along the way.