Excess or additional coverage not affected

Any policy which grants the coverage required for a motor vehicle liability policy may also grant any lawful coverage in addition to the coverage specified for a motor vehicle liability policy and such excess or additional coverage shall not be subject to the provisions of this chapter. With respect to a policy which grants such excess or additional coverage the term, motor vehicle liability policy, shall apply only to that part of the coverage which is required by § 32-35-70 or