'Road Dreams' (by Elliot somebody) was a series of 6 30 minute films shown on british tv about 25 years ago. each film is a road trip through the states with accompanying music - john prine, johnny cash, penguin cafe etc and literature from the beat poets. it's all very lyrical and a beautiful reminder of the old hippy camper van days. i'd very highly recommend it - anyway the 'Burma Shave' ads come by frequently and are accompanied by the wee rhymes you are asking for. good luck in finding it. i'm afraid i'm not able to do the link thing but i'm sure it would be popular if anyone could supply it. -ta
(hi joe - any chance of getting that name change i asked you for? - pete glasgow)