1. Which model? V2, I'm guessing?
2. What's your budget? Cost of mods may go over original purchase price.
Maybe more practical to get a new bike that does what you want.
3. Bike Friday for take apart handlebars.
4. Dahon/Tern for magnetic system to hold fold. Or just use a piece of velcro.
5. Are you sure your model rolls when folded?