What should I do if I was in a car accident at the dealership I worked at?

If you own a car that has liability insurance, turn the claim in to your insurer. It is probably covered. If your insurance doesn't cover it, or if you have no insurance, decide whether it is worth hiring a lawyer to defend the case (depending on how much they are seeking) or file an answer. You can write a handwritten answer admitting and denying the various allegations in the Complaint, and file your answer with the court. That will keep you from losing by default. Eventually, there will be a trial and you will have an opportunity to tell your side of the story.

Bring the other dealership employee into the case as a co-defendant. If he was speeding, then HE is at fault. Even though this was on private property (as opposed to a public road), speeding IS the cause of the accident.

Immediately turn the matter over to your insurance company as they may have a duty to provide you with a defense. If the insurance company denies you a defense, you will have to hire an attorney to represent you and defend you.

If you were acting in the course of your employment at the time your insurance company and that of the dealership should defend you. Turn the case over to both companies.