Too bad we can’t all travel by flying sleigh: Based on trip data from previous years gathered by INRIX, the transportation analytics firm, this season’s holiday-related car traffic in U.S. metros could slow down drives by as much as three times the normal duration.

More than 107 million Americans are expected to mobilize via plane, train, and automobile between December 23 and January 1—the highest year-end travel volume on record, according to the American Automobile Association. Roughly 97 mill…