It is difficult to say whether your father's insurance will cover the damages from spinning into a guardrail without knowing the specific details of the policy and the circumstances of the accident. However, in general, car insurance policies typically cover damages to the vehicle and personal injuries sustained in an accident, regardless of who was at fault.
If you were driving your father's car and crashed into a guardrail, you should contact your father's insurance company to report the accident and file a claim. The insurance company will then assess the damage and determine the extent of the coverage.
It is important to note that if the accident was caused by your own negligence or recklessness, your father's insurance rates may increase as a result. However, if the accident was caused by external factors such as poor road conditions or a mechanical failure, the increase in insurance rates may be less likely.
In any case, it is important to cooperate fully with the insurance company and provide any requested documentation or information to facilitate the claims process. It may also be beneficial to consult with a lawyer or an insurance professional to ensure that your rights are protected throughout the process.