Toy balloon in "Swiss Family Robinson" (1813) and in "Moby Dick" (1851). The first rubber balloons were made by Professor Michael Faraday in 1824 for use in his experiments with hydrogen at the Royal Institution in London. "The caoutchouc is exceedingly elastic", he wrote in the Quarterly Journal of Science the same year. "Bags made of it...have been expanded by having air forced into them, until the caoutchouc was quite transparent, and when expanded by hydrogen they were so light as to form balloons with considerable ascending power..." Faraday made his balloons by cutting round two sheets of rubber laid together and
English Electric Balloon and its iconic pointed ends replaced with rectangular ones. The bogies were replaced with fabricated ones able to accommodate "Metalastik" rubber/ metal bonded suspension in the manner of the "OMO" vehicles and the tram officially entered service in 1979 after testing as Jubilee 761. Balloon 714 was later rebuilt in a similar fashion, though it retained its original central doors as well as the front ones to improve passenger flow at stops. 714 re-entered service in 1982 as Jubilee 762. Although a success and a big crowd-mover, no more were built either new or from the Balloons. Both cars were