Destination Unknown Ickle Pickle Products (M10)

This clever trick that has fooled many magicians as well as non magicians!  10 laminated cards are displayed, each having 10 cities named.  A spectator is told to mentally select a city from the group of 100. He is allowed a totally FREE choice. There are ten cities on each of ten red cards. He merely points to the card which has his city on it. Then all of the cards are turned over, mixed up and laid out on the other side. The white side. Once again he finds his city. When he points to the card with his city, you INSTANTLY know which city he selected. Lots of fun to perform... and rather perplexing! May be repeated.