will I need a commercial auto insurance?

As a businessman, you need the same kind of insurance coverage to use the car in your work as you do for a car used for personal travel - liability, comprehensive collision and medical payment (known as personal injury protection in some states) and coverage of the drivers are not insured. In fact, many business people use the same means of pleasure and business alike. If the vehicle is owned by a business, and make sure the name and the business seems to be on the "main insured" instead of your name. This would avoid any possible confusion in the event that you need to bring an action or claim filed against you.