Draisine Magnet

I love Wikipedia! "From 'hobby horse' came the expression 'to ride one's hobby-horse,' meaning 'to follow a favorite pastime,' and in turn, the modern sense of the term hobby....The term is also connected to the draisine, a forerunner of the bicycle, invented by Baron Karl von Drais....In 1818, a London coach-maker named Denis Johnson began producing an improved version, which was popularly known as the 'hobby-horse.' [1] The artistic movement, Dada, is possibly named after a French child's word for hobby-horse." [1] David V. Herlihy, Bicycle, Yale University Press, 2004; pp. 31-38. Cool!