SITUATIONS AT A COUPLE OF MAJOR HUBS.

HUBS. WE BEGIN WITH MORGAN CHESKY.

WE BEGIN WITH MORGAN CHESKY. >> Reporter: TONIGHT THE HOLIDAY

>> Reporter: TONIGHT THE HOLIDAY TRAVEL RUSH BROUGHT TO A SCARY

TRAVEL RUSH BROUGHT TO A SCARY HALT.

HALT. A NEARLY 70-CAR CHAIN REACTION

A NEARLY 70-CAR CHAIN REACTION ACCIDENT, SHUTTING DOWN 64 IN

ACCIDENT, SHUTTING DOWN 64 IN BOTH DIRECTIONS NEAR

BOTH DIRECTIONS NEAR WILLIAMSBURG.

WILLIAMSBURG. >> I GOT OUT OF MY CAR AND I

>> I GOT OUT OF MY CAR AND I WENT AND ASSISTED A WOMAN WHOSE

WENT AND ASSISTED A WOMAN WHOSE LEG WAS PINNED INSIDE HER DOOR.

LEG WAS PINNED INSIDE HER DOOR. >> Reporter: CAPTURING THIS

>> Reporter: CAPTURING THIS VIDEO AFTER HIS CAR SLID ON

VIDEO AFTER HIS CAR SLID ON BLACK ICE, CRASHING INTO THE

BLACK ICE, CRASHING INTO THE MASSIVE PILE-UP.

MASSIVE PILE-UP. SOMEHOW HE WALKED AWAY AS CREWS

SOMEHOW HE WALKED AWAY AS CREWS TOOK 51 OTHERS TO NEARBY

TOOK 51 OTHERS TO NEARBY HOSPITALS.

HOSPITALS. >> WE DO NOT KNOW THE CAUSE OF

>> WE DO NOT KNOW THE CAUSE OF THE ACCIDENT AT THIS TIME BUT WE

THE ACCIDENT AT THIS TIME BUT WE HAVE FACTORS SUCH AS HEAVY FOG

HAVE FACTORS SUCH AS HEAVY FOG AND ICY ROAD CONDITIONS THAT

AND ICY ROAD CONDITIONS THAT MORNING.

MORNING. >> Reporter: DESPITE POTENTIALLY

>> Reporter: DESPITE POTENTIALLY DANGEROUS WEATHER, 100 MILLION

DANGEROUS WEATHER, 100 MILLION AMERICANS OPTING TO DRIVE TO

AMERICANS OPTING TO DRIVE TO THEIR HOLIDAY DESTINATIONS.

THEIR HOLIDAY DESTINATIONS. 4 MILLION ARE UNDER FLASH FLOOD

4 MILLION ARE UNDER FLASH FLOOD WATCHES ACROSS THE SOUTHEAST

WATCHES ACROSS THE SOUTHEAST WHERE HEAVY RAIN AND GUSTY WINDS

WHERE HEAVY RAIN AND GUSTY WINDS COME WITH IT.

COME WITH IT. MIAMI AND ATLANTA ALREADY

MIAMI AND ATLANTA ALREADY EXPECTING DELAYS, BUT MOTHER

EXPECTING DELAYS, BUT MOTHER NATURE ISN'T THE ONLY PROBLEM.

NATURE ISN'T THE ONLY PROBLEM. AT LAX THIS FIERY SCENE CAUSED A

AT LAX THIS FIERY SCENE CAUSED A TRAFFIC NIGHTMARE.

TRAFFIC NIGHTMARE. FLAMES TORCHING THREE EMPTY

FLAMES TORCHING THREE EMPTY PASSENGER BUSES, PROMPTING A

PASSENGER BUSES, PROMPTING A FAST RESPONSE BUT FORTUNATELY NO

FAST RESPONSE BUT FORTUNATELY NO FLIGHT DELAYS.

FLIGHT DELAYS. AIR TRAVEL EXPECTED TO JUMP

AIR TRAVEL EXPECTED TO JUMP NEARLY 5% WITH 7 MILLION PEOPLE

NEARLY 5% WITH 7 MILLION PEOPLE PLANNING TO FLY BETWEEN NOW AND

PLANNING TO FLY BETWEEN NOW AND NEW YEAR'S DAY.

NEW YEAR'S DAY. A LACK OF BAGGAGE HANDLERS LED

A LACK OF BAGGAGE HANDLERS LED TO MISSING BAGS, DELAYED FLIGHTS

TO MISSING BAGS, DELAYED FLIGHTS AND FRUSTRATED PASSENGERS IN

AND FRUSTRATED PASSENGERS IN SEATTLE.

SEATTLE. >> Reporter: FIRST OFFICIAL DAY

>> Reporter: FIRST OFFICIAL DAY HERE IN ATLANTA.

HERE IN ATLANTA. RAIN IS COMING DOWN AND THE

RAIN IS COMING DOWN AND THE CONDITIONS GUSTY.

CONDITIONS GUSTY. IF YOU'RE TRAVELING ON THURSDAY,

IF YOU'RE TRAVELING ON THURSDAY, THE DAY AFTER CHRISTMAS, AAA

THE DAY AFTER CHRISTMAS, AAA SAYS THAT WILL BE THE BUSIEST OF