I saw one of these a few years ago in Yorkshire. Normally these were hitched to a sidecar but this one was a solo machine. Surprisingly manageable and squat for a big 1000cc engine. Goes uphill as fast as it goes down. Just stick it in fourth gear from standing and let it go.
Nice composition, and you captured the metallic look well. I remember when these were popular. Always wanted one but my college budget wouldn't allow it. Got a used NSU Max instead.