Only 21% say their summer travel plans include domestic air travel, while only about 1 in 10 Americans (9%) expressed plans to fly internationally during their summer vacation.
Ironically, while bar soap, napkins and diamonds each have fallen victim to millennials' shifting preferences, this demographic widely rumored to be less car oriented than their elders is killing for a summer road trip, too.
"Road trips are nearly always cheaper than other forms of travel, which helps explain why road trips are by far the most popular types of summer travel."
Bowman and his wife, Apryl, had road trips specifically in mind when they purchased an Acura MDX SUV several years ago.
How could they save on gas during road trips, lessen their environmental impact and yet still make it down that bumpy road?