What the bloody hell is that awful noise?
It's a bike. With a trailer. The bike is a cheapo full-susser repainted by airbrush to read 92nd(?) Sutherland Regiment, with a patch of tartan on it.
The trailer was a mobile sound system with adapted in car speakers screwed to it, and massively overdriven. Square waves all over the shop. And the CD was skipping dreadfully. The trailer had various images painted on it, and had two driving lights attached to the top facing rearwards.
Beatrix has nothing to fear from this device. And the owner's taste in music is nowhere near as good as our Valiant's