If you are looking for the ultimate anorak car book, this is it. Michael Graf Wolff Metternich, automotive historian and Maybach specialist, has written this book about German threewheelers, or to be correct, about German three-track vehicles. This excludes motorbikes with sidecars. The 475 pages of this book are filled with information and b/w pictures you will probably find nowhere else. He managed to find illustrations of almost every obscure threewheeler ever built in Germany, ranging from motorized threewheeled bicycles to street sweeping trucks. I love this book. Unfortunately this book is very rare. I only saw it once (and immediately bought it). It cost 40 Euro in 1997, when new. It isn't listed at amazon.