Do you have any evidence on this? As a personal anecdote, driving is as much a hassle if not more than flying, depending on the distance. I care more about cost first and time second. Even if you buffer in getting to the airport 2 hours early, flying is almost certainly the fastest (compared to driving and train, if available) unless you're flying from like, bos -> nyc. Security at airports hasnt felt like a hassle for me in years (at least the past six years).

I had two recent trips to the same destination. I drove once because it was so much cheaper (during the world cup when air fare was jacked up) compared to the train or flying. I flew the other time, because it was only a little more expensive and flying is faster and less of a hassle, actually.

Additionally, given the article talks about families, the cost comes down a lot with multiple people in one car vs multiple plane tickets. If we want to make travel safer by putting fewer cars on the road, make alternatives cheaper. They're already more convenient to me...