he's got some kind of device outside the sub, that holds a piece of glass, with a card attatched to it. the card is already torn like the one he will do live. when the cards are flicked towards the window, the outside piece of glass slides up/over/down, putting the card in view. we never see WHICH card is outside.
then, he simply palms the card the woman signed. the rest is easy.
There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors
When he does it with the car window, you can see him switch cards when he peels it off the glass. He has the signed card with him the whole time and then just swaps it with the sticky card at the end. I can't quite see see the Ace of Hearts coming in, but I can see the sticky card being taken away. Look at how stiffly he holds his left hand while showing you the Ace.
It's hard to see through the flury of cards to see the sticky card shoot up the window of the diner and the boat from the other side.
But it IS a sweeeeet effect. [ April 25, 2006: Message edited by: Ryan McGuire ]
Hmm... i know the card is stuck in there already but i dont know how he conceals it so nicely. Like you said, for a few frames you can see that his left hand is stiff.
Here is how i think he does it...
Notice that always, the card appears to have stuck very neatly to the window, even though he threw the cards onto the window. When i watched the video frame by frame, the card appears out of nowhere which leads me to believe that he can flip a switch somewhere which allows everyone to see the card. When its time to look at the card he flips the switch back again and produces the other card in his right hand. Notice also that you never get to see what card it is when it is stuck on the window until he comes near it to show you.
When he does this with the car he removes the thin film very skillfully and produces the card in his right hand.