Life in a Voucher world?

Let's imagine for a moment a pure voucher environment.  Every child has a set dollar allotment to use at the school of his or her parents choice.

Now for some questions..

• Would all schools offer special education services?
• Would any schools offer transportation?
• Would there be any need for high-stakes testing?
• Is there any accountability other than voting-with-their-feet?
• Would all schools offer breakfast and lunch?
• How does such an environment not cause income-based segregation?