Utilize the input text as a context reference, choose the right relationship between 'Direct Line' and 'insurance' from the options.
Options: chairperson, product/material produced, location of formation, creator

This week Britain’s largest motor insurer, Direct Line (Other OTC: DIISY - news ) , described driverless cars as an emerging risk which could have “a major impact on the size and nature of the insurance market and the role of insurers”.
product/material produced