Insurance — Uninsured motorist — Coverage — Plaintiff seeking coverage from her automobile insurer for injuries plaintiff suffered while training in the back of a truck that operated a mobile gym — No error in granting summary judgment in favor of insurer because mobile gym was not an uninsured auto within the meaning of plaintiff’s policy — Policy clearly and unequivocally provided that a vehicle located for use as a premises is not an uninsured auto, and truck was being used as a premises when negligence occurred where clients worked out in mobile gym only when it was stationary, parked, and connected to a power source, and never worked out when gym was being driven as a vehicle