The Genesis has more living space than the Acura (109.4 vs. 102.1 cubic feet of EPA passenger volume), to start.

WSJ: 2014 Acura RLX Review: Larger, but It Still Comes Up Small | Rumble Seat by Dan Neil

Since 2000, reports the Air Transport Association of America, there's been a 21% drop in passenger volume for flights of 500 miles or less.

FORBES: A700's Numbers

As passenger volume has zoomed, flight delays are becoming more common.

FORBES: Magazine Article

The city of Fairfield, which has three affected train stations, sent out a message telling commuters there will not be enough extra buses to handle normal passenger volume on Monday.

CNN: 9 still hospitalized after Connecticut train collision

Yes, passenger volume is up.

FORBES: Fact and Comment

Air cargo planes are believed to receive less attention than passenger planes because of the sheer volume of freight passing through.

BBC: NEWS | Americas | Man mails himself to Texas

Fewer passengers and hefty baggage fees reduced the volume of checked luggage, and so airlines lost fewer bags per passenger.

WSJ: An Airline Report Card: Fewer Delays, Hassles Last Year, but Bumpy Times May Be Ahead