An ACT woman clocked driving at 167 kilometres an hour along the Hume Highway had her 10-month-old daughter as a passenger, NSW Police say.
The 20-year-old woman was caught by police travelling 57 kilometres over the speed limit south of Gundagai on December 30.
She was fined $2306 and her right to drive in NSW was revoked. Police also impounded her Volkswagen sedan for three months.
The woman was one of almost 4000 people caught speeding in the southern region of NSW during the Christmas and New Year period.
Southern Region traffic tactician Acting Inspector Allan McCulloch said this equated to about a quarter of all the motorists caught speeding in NSW during Operation Arrive Alive.
He said speeding motorists were putting themselves and other road users at risk and ignoring pleas to slow down.
"There have been several fatal and serious crashes in the region and despite some atrocious weather, we still see motorists who are not getting the message to slow down," Inspector McCulloch said.
During the first 17 days of the operation, police breath-tested more than 170,000 motorists and charged 219 with drink driving.