Sure, but quite often in EMUs the cars come in sets that can't operate disconnected from each other, so I'd argue that they still comprise a single vehicle.
I'd argue that the ISS, due to lacking means of propulsion (unless you count explosive decompression) is not a vehicle.
The ISS has two different propulsion systems and has used them to avoid debris. I don't think that it has enough power to leave orbit and reach greater altitude.