Isambard Kingdom Brunel a white elephant, but it has been argued by David P. Billington that in this case Brunel's failure was principally one of economics—his ships were simply years ahead of their time. His vision and engineering innovations made the building of large-scale, propeller-driven, all-metal steamships a practical reality, but the prevailing economic and industrial conditions meant that it would be several decades before transoceanic steamship travel emerged as a viable industry. "Great Eastern" was built at John Scott Russell's Napier Yard in London, and after two trial trips in 1859, set forth on her maiden voyage from Southampton to New York
Isambard Kingdom Brunel abandoned works at Rotherhithe to further his abortive "Gaz" experiments. This was based on an idea of his father's, and was intended to develop into an engine that ran on power generated from alternately heating and cooling carbon dioxide made from ammonium carbonate and sulphuric acid. Despite interest from several parties (the Admiralty included) the experiments were judged by Brunel to be a failure on the grounds of fuel economy alone, and were discontinued after 1834. In 1865, the East London Railway Company purchased the Thames Tunnel for £200,000, and four years later the first trains passed through it. Subsequently,