What does "Let’s take the subway down to the docks." mean in English for Spanish?

In English for Spanish, "Let’s take the subway down to the docks." means:

Vamos a tomar el metro hasta los muelles.

Listen to "Let’s take the subway down to the docks.": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a phrase that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 4, Level 2, Scene 5