But, all that said, I’d love to be able to develop for the iPad on the iPad. Especially if it were a HyperCard-like thing, where the output looked native to the iPad but was based on WebKit behind the scenes, thus allowing the apps made by the thing to be openly distributed and shared with other iPad users

Daring Fireball Linked List: Dave Winer on the iPad

I loved building things with Hypercard back in the day (see old post here). It would be fantastic to see someone create the modern day version of it.