How on Earth did they do the bike riding scene in the park??
It's funny, but in this day and age we've seen it all in terms of visual effects, I can tell you how the effects in Jurassic Park and Avatar were done but for the life of me I can't figure out how they did the shots of Kermit and Piggy on their bikes!
The close-up shots of them are pretty obvious but what about the one's where we see the entire bike with them riding them? With Piggy it could conceivably be a very small actor in a suit but with Kermit this is not possible as his body is far too skinny for a human being to be inside a suit.
The bikes were most likely specially built and the peddles motorized with Kermit's feet attached to them giving the illusion that he's doing the peddling so that part is pretty self explanatory.
This was years before digital wire removal so I don't think the bikes were being held up by cables, plus it's also not as if Kermit and Piggy were static dummies because we see Kermit moving his head and mouth as if he still had someone's hand inside him.
Great bit of visual trickery there I must say.
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