If any person who is driving on a Tennessee road, highway, interstate or other thoroughfare or rightfully in physical control of any motor vehicle containing a hazardous waste or hazardous substance as defined in §68-131-102 is adjudicated to have been at fault in a court of competent jurisdiction for an accident resulting in a spill of such hazardous waste or hazardous substance, the employer of such person shall be jointly and severally responsible for damages incurred as a result of the spill, and any reasonable clean-up costs incurred by the governmental agency or the state or any political subdivision thereunder, which may result from the spill. In the event of a dispute concerning the reasonableness of assessed clean-up costs or damages, a court of competent jurisdiction shall determine the reasonableness of such costs and damages.