Can an "add-in" be saved to a workbook?

[schmill]

I have installed "Sam Radakovitz" date picker add-in from here. I was wondering if there is a way to save the add-in to the workbook so that if i send the workbook to someone who does not have the add-in installed on there computer it would still work. So i have 2 questions:

1. Can an add-in be saved to a workbook?

2. Is there some way to extract the code from the add-in and insert in the workbook?

Thanks, Bill