Captain Najork has never quite got over the time that Tom beat him and his hired sportsmen at womble, muck and sneedball, so when he sees Tom hurtle past his window in a two-seater jam powered frog, he sets off in hot pursuit.
Russell Conwell Hoban was an American expatriate writer. His works span many genres, including fantasy, science fiction, mainstream fiction, magical realism, poetry, and children's books. He lived in London, England, from 1969 until his death. (Wikipedia)