Men Like Gods - Dystopian Sci-Fi Novel

Mr. Barnstaple is a journalist working in London and living in Sydenham. He has grown dispirited at a newspaper called The Liberal and resolves to take a holiday. Quitting wife and family, he finds his plans disrupted when his and two other automobiles are accidentally transported with their passengers into "another world", which the "Earthlings" call Utopia. A sort of advanced Earth, Utopia is some three thousand years ahead of humanity in its development.