Your first order of business is to seek medical treatment for everyone's injuries. Your delay in seeking treatment might work against you if you pursue a car accident claim. Next, you should record as much information about the accident as is possible. Include the names and contact information of other drivers and passengers and contact information for any witnesses. Take photographs of the accident scene and file a report with the local police or sheriff within 24 hours. Report the accident and file a claim with your auto insurance company, even if you are unsure if it covers rental cars. Next, call the rental car company and report the accident to an agent. Ask them for a claim number and save it as proof that you reported the accident. If your contract requires you to return the car or the agent directs you to return it to the rental agency-- verify that you have photographs of all damage before returning it