Would the eye witness account of a dependent witness hold any weight in a car accident?

Dependent witness; hats's a new one to me. Do you mean an interested witness, such as a friend or relative?

I have several injuries from a chiropractor compressing is whole body against me after snapping neck.

You have a potential claim. An experienced, qualified and local malpractice attorney is essential. These are complex cases. Good luck.

How long does an insurance company have to respond to questions concerning an accident?

Unless there is a court order they do not have to respond.

Given the specifics of my case, is it still worth hiring a lawyer?

At a minimum, have a conversation. No downside to that. Good luck.

Do I have case for a personal injury lawsuit?

See what speaking to your adversary before speaking with attorney brings? Sorry for your situation. As you describe it, you are probably the sole...

I currently have an injury case with my lawyer against mcdonalds.Does it affect me if I just drop the case?

There would be no legal ramifications for dropping a case. Whether there might be costs, while possible, should be unlikely. Schedule a meeting...

I settled my case which was about slipping on a parking lot stripe at Wafflehouse. I went to arbitration which lasted all day.

Your frustration/ansgst comes through. Not sure of your question.

I was hit in the back drivers side after making a left turn, but my car was stopped in a line of cars. whose fault is it?

Question of fact as to fault. A traffic attorney should be able to help you (successfully) resolve the ticket.

If my company donates 2 kegs of beer to my sons youth baseball fund raiser (poker tournament) is my company or myself liable if

Possibly. Would need more facts. Responsibility requires responsibility. Good luck with the fundraiser.

Laywer is ethically to withhold necessary sum to resolve any outstanding lien(s). Presumably the entire settlement is being held because what is...