Will I be tested at my second court date?

These are questions for your lawyer, not for the internet. Law enforcement can read your online posts.

Why would I be told to report to Jail a week after an accident when I wasn't arrested at the scene

This has already been asked and answered.

Will I be held responsible if the car I just sold breaks down from improper use ?

You might want to contact a lemon law attorney in your locale.

Can a felony fleeing and eluding under the new statute be dropped or changed without doing time?

Possibly, but you need a defense lawyer to handle this.

In addition to what my colleague said, you could ask the probation office that had you on call-in.

Why would a Ga State Patrol not take you to Jail for dui but tell you to report in 7 days?

Follow my colleagues' suggestions and get a lawyer.

You need to get a lawyer to deal with that warrant.

What is the maximum penalty for leaving the scene of a accident hold?

It depends on what the charge is. It sounds like you are facing a misdemeanor case with a max punishment of 12 months in jail, but it could also...

Ask the person's lawyer and see the answer by my colleague.

Do I have to serve jail time for driving without a license ?

Follow the suggestions by my colleague.