Two guys in a Glasgow pub were discussing their cars. One said he had problems selling his because it had 200,000 miles on the clock. His mate tells him not to worry, as he knows a backstreet garage which would turn the milometer back substantially for a few quid. A week later he asks his pal if he had now sold his car after the shady deal had been done. ''Naw,'' says his mate. ''Why should I? It only has 30,000 miles on it.''