A mock-up at the 'Victoria Line' exhibition at the Design Centre, London, of the interior of a new type of carriage which will be used on the new Victoria Line of the London Underground, 20th August 1968. The new carriages feature lengthways seating to allow more room for standing passengers, two-level arm rests, which can be shared by adjacent passengers, and internal speakers for driver announcements. (Photo by Ron Case/Keystone/Hulton Archive/Getty Images)