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Ok how about, I just need to brush up a little in general? ))))

Ah yes. Coach could work too, it was understandable. A coach and a carriage could be a lot of things from an автобус to something you push babies in when you're walking.

Looks like I need to...

Well there yo go.

Then change "Stroll" to "Roll" and your all set.

Карета медленно катилась по Неескому проспекту

I guess Kareta is a name, Slowly strolled along Nevskiy Prospekt (the main drag in St. Peterburg).