Between 1943 and 1944 the system was rebuilt to use electricity, with an official re-opening on 9 May 1944 by Mayor T.C. Pembro – who had taken office only 2 hours previously. In 1955 the original heavy wooden cars were replaced by the 'up-to-date' stronger and lighter (5.4 long tons or 5.5 tonnes) aluminium monocoque ones still in use today. Each car can carry up to 18 passengers.The rails were replaced in about 1972 with the bullhead design formerly used on mainline railways.