I am told it's called a joy fold card, and I made it today at a workshop, you can find the instructions here
Dad doesn't have a computer so putting the card on my blog won't spoil the surprise for him. I am sure he will love it. I would like to enter it in Make My Monday challenge this week and in a couple of others: the one Stop Craft Challenge, and the Saturday Challenge who are both asking for Fathers' Day cards.
By the way, Dad loved this card and I got a top three mention (top four actually!) from the team at MMM. There were so many fabulous Fathers' Day cards entered in the challenge that I was very surprised and quite chuffed to get a mention!