there are emergency room equivalent. reporter: maybe so, but the airline s top medical adviser warns with omicron s high transmissibility, airline passengers are two, even three times more likely to catch the virus than wit d. t abk nmen long lines of covid test takers include the holiday s hosting families. family coming in from california. we re all vaccinated, but we just want to be double safe. reporter: most travelers, roughly 100 million people, will drive at least 50 miles. nationally, average gas prices run high $3.29 a gallon, more than $1 above last year, the highest holiday price at the pump since 2008. despite paying up to gas up, and whatever the viral risk, one theory for this surge in holiday travel: people being cooped up for a year and a half. they need to see family and