Driving without a valid license in California is a serious offense. If caught, you could face heavy fines, vehicle impoundment, and even criminal charges, depending on the circumstances. Law enforcement officers are trained to verify the validity of foreign licenses and will report any discrepancies. To avoid such issues, ensure that your international driver's license or valid foreign license is always up to date and that you carry all necessary documentation. In legal situations, contacting a licensed attorney can provide critical guidance and support.