Can I sue the USPS for negligence?

Possibly. the first step is to file a claim form.

Do I have recourse to cover lost wages resulting from incompetent service people?

Probably not worth while and may just cause more problems than the loss of wages.

What should I do now? I had a car accident case back in December 2013 and I tried to get case close in mid April 2014

There are many strategies at play in negotiating a case involving who the insurance carrier, who the adjuster is, facts of the case, etc... Your...

How to go about collecting a judgement?

after the appeal time has lapsed simply forward the judgment to the insurance carrier and demand payment. Additionally there is a Judicial Council...

You are at fault for rear ending the Mustang. However your insurance carrier should defend you against the claim of the SUV. Check with your...

A car got in my lane on freeway caused me to go out of control & totaled my car. They didn't stop.

That is correct - no contact no uninsured motorist coverage on phantom car incident

I have an unsatisfied judgement against my license . Should I try to negotiate a final settlement with attorney representing

You should meet with an attorney to review the terms of the agreement to release the hold and how that might play with resolving the debt

Is there any way I can get additional money for being injured at work other than worker's comp?

If there is a third-party (not a fellow employee) that is responsible for the injury you can file a claim/lawsuit against the third-party. ...

I changed car accident attorneys and my first attorney has a lien on my claim. Does he have to sue me to enforce it?

the insurance company will put his name on any settlement checks as a payee. He and your new attorney will resolve his lien.

It seems the car wash will be responsible. You can also make a claim against your insurance and let them go after the car wash for reimbursement.