You need to protect yourself should your vehicle be damaged or stolen. Just as important, you need insurance for liability - property damage or injury to others caused by you and other household members as a result of operating a motor vehicle. Other policy features include medical payment reimbursement and reimbursement for injury caused to you by an uninsured or inadequately insured driver. There are many special situations where you may need to customize your policy; examples include installation of custom audio equipment, business use of your auto and teenage and guest drivers, to name a few.