(31 May 2015, 6:18 pm)Tommy_1581 wrote 4000 is a trailer which can be attached to a motor vehicle of some sort.
Ah, whoops!
Went on a Flickr hunt after posting, and found it wasn't a 'real' Metrocar.
https://flic.kr/p/nPVkXG
Fair to say if that pulled up at my local Metro station, I wouldn't be best pleased.
