Bright Phoebus - on a Land Rover?

Subject: Bright Phoebus
From: The Doctor
Date: 29 Aug 16 - 06:17 AM

This time last week I was driving back to Leeds from Suffolk, where we'd been at the FolkEast Festival, which incidentally was very enjoyable. As I drove along the A14 we were passed by a Land Rover which had a very elaborate, hand-crafted wooden back, with an arched roof, shaped rather like a Nissan hut. Burnt into the arching over the rear doors were the words: 'As happy as those that's got thousands or more.' A little further on we came to a hold up and found ourselves behind said vehicle, and in the course of our crawl I saw that the name 'Bright Phoebus' was painted on the passenger door.

Does anyone know of this vehicle? Enlightenment would be most welcome.