Your state requires you to protect an insurance for the driver and pass for the protection of the people in your community in case of accident, if you least expect it.
Getting insurance is important, even if you are within the category of occasional driver you must always have your car insurance related. Although the definition of such driver type varies in the individual insurance company public and the automotive industry, but for some it refers to a person who normally do not drive.
Although auto insurance is different, there are many that insurance allows you to add an occasional driver on your policy, but it will always depend on the requirements of your insurance company. But with this kind of driver you may only drive the car not even a week.