Original sentence: Both groups divine a correlation between increased CAFE standards and increased highway deaths.The CAFE standards have come under attack by conservative think tanks such as the Heritage Foundation and the Competitive Enterprise Institute, primarily on the basis that the cheapest way for automotive manufacturers to increase mileage is to reduce vehicle weight, which leads to weight disparities in the vehicle population and thus increased danger for occupants of lighter vehicles
Edited sentence: Both groups note almost an exact correlation between increased CAFE standards and increased highway deaths.The CAFE standards have come under attack by think tanks such as the Heritage Foundation and the Competitive Enterprise Institute, primarily on the basis that the cheapest way for automotive manufacturers to increase mileage is to reduce vehicle weight, which may make vehicles inherently less safe in accidents