Lamberth reached around and prepared to throw the car seat with the baby out of the SUV.
That's when firemen showed up.
"I thought, as long as he made it I was happy. I was terrified and I was happy to see them. They were our guardian angels," Lamberth said.
Members of the community volunteer fire department happened to be at a Christmas party at their station less than 100 feet away.
The lucky mom and baby escaped unharmed.