In this section route 66, the author points out that a new car cost only twice as much as a round-trip transcontinental flight. why is this distinction important? need , already failed 3 questions, i-ready question.

it explains why road travel became so popular.

Explanation:

The author resets the price of a new car and all the costs that involve its purchase, in a certain part of his work. With this, the author wanted to show why road travel became so popular. He shows this by saying that the costs of a new car were double the round-trip transcontinental flight, so people didn't find it helpful to buy a car and preferred road trips.

it is the : d because is true