travelling is that it is unable to voyage through water. The conductor of the Knight Bus is Stan Shunpike, and its driver is Ernie Prang. In the third film, Ernie is accompanied by a talking shrunken head voiced by Lenny Henry. As revealed on Pottermore, the Knight Bus was first commissioned in 1865 as a method for underage or infirm wizards to transport themselves discreetly. The idea was proposed by then-Minister of Magic Dugald McPhail, after a number of other ideas such as broomsticks with sidecars were vetoed, taking inspiration from the then-relatively-new bus service. The actual Knight Bus seen in the film adaptation was built by grafting the top deck of a London AEC Regent III RT bus onto the top of another "RT" bus. Both buses were originally built for London Transport; the "RT" was the standard London diesel-powered double-decker bus of which approximately 4,000 were built from 1939 until the mid-1950s (and were used in daily service until 1979). The actual bus used was RT3882 (registration LLU681), with the additional top deck from former RT2240 (registration KGU169). Parts of RT 4497 (OLD 717) were also used. A replica of the Knight Bus sits in front of the London facade at The Wizarding World of Harry Potter in Universal Studios Florida, serving as a stage for a small audience-interactive show with a Stan Shunpike look-alike and a shrunken head. Portkeys Portkeys are first introduced in Goblet of Fire by Arthur Weasley. They are an alternative to apparation but can also be used to transport a group of people at once. Created by using the Portus spell, a Portkey can be set to transport anybody who touches it to a designated location or to become active at a predetermined time and transport itself and anyone touching it to its set destination. It may be created for one-way, one-time use or to transport the holder to and from a particular place in a round trip; in addition, it may be set to activate at a particular time or automatically transport the first person who touches it. The creation of Portkeys is highly restricted and controlled by the Ministry through the Department of Magical Transport's Portkey office. Cornelius Fudge objects to Dumbledore spontaneously creating one, stating that Dumbledore hasn't got authorisation; and at one point in chapter 3, Lupin says, "... it's more than our life's worth to set up an