Would you want a transparent iPad? Check out this concept video of a mostly transparent iPad. It's a bit weird to see such a futuristic device running such an old OS, but I guess that can't be helped.
I'm not sure the iPad could be, or needs to be transparent. It seems like that would introduce a lot of visual issues with backlighting. I'm looking forward to a day when you can project the OS on to any surface. Imaging reading email in the mirror while you're shaving in the morning. Or having messages pop up in the kitchen window as you make your coffee. Now we're talking.
If you want to see more of the transparent iPad, hit the source link below.