An exceptional journey through Germany via bicycle   I had thought for some time that there must be something funny about Germany because, except for hard-drinking types at the Munich beer festival, I had never heard of anybody going there for a holiday. This was, in my view, the first of two advantages. There are travellers who, when abroad, are delighted to see a fellow countryman. Not I. There are quite enough Englishmen at home without my wanting to run into them abroad.   Carrying few preconceptions but plenty of wit, Edward Enfield sets off to Germany for a cycling adventure. Determining the route he should take from recommendations scrawled on a napkin, he starts by following the "Romantic Street" along the banks of the Danube from Passau to Vienna, taking in castles, churches, and good food along the way. And, as is revealed in this charming book, there is no better place from which to see a country than that of a bike seat.