Under California Vehicle Code §12500, driving without a valid license can result in a citation. Lacking evidence of liability insurance is a violation of Vehicle Code §16028 and a first-time offense can result in a fine of between $100 and $200, plus penalty assessments.
With all of the cards we’re required to keep track of, sometimes we misplace our driver’s license. If your glove compartment is anything like mine, finding a credit card-sized evidence of liability insurance amid a disorganized mess of papers, manuals, sunglasses and loose change is going to be difficult. Add an impatient police officer standing next to your car, and you’re going to get nervous. This nervousness can be misconstrued by the police officer as you being under the influence of a drug and may result in a breath and/or blood test. Even if you are not under the influence, an arrest can often jeopardize your employment and any professional licenses you may hold.
The Orange County Criminal Lawyer Blog

