Adding the Powered Up motor and battery box to 40370.
The outsize buffers on 40370 limit the freedom of movement of a magnetic coupler, so I'm using a 1960s-style hook coupler to connect the battery van. The van itself is a slightly lengthened version of the one I used on 7710 (and since I made that video I've lengthened the 7710 van in the same way).
Music: Metre, 'The Jitters' (CC-BY-NC-SA)
