Sure but that's as blanket a statement as it gets. The source is:
https://blog.aopa.org/aopa/2009/02/2...ing-a-car-not/. Not very deep, statistically speaking that is.
In the Melbourne basin area, the air must be safer than the road if the number of people driving and texting at 80 km/h on the Nepean Hwy is any measure to go by.