A thousand people gathered Monday as the pregnant NYPD traffic agent who was fatally struck on a Bronx street was laid to rest in the same casket as her infant son.

Mayor Michael Bloomberg, Police Commissioner Ray Kelly and hundreds of NYPD members were among those who gathered at the Community Protestant Church to say goodbye to Donnette Sanz and her son, Sean Sanz as the widowed husband and father cried at his unimaginable loss.

Sanz was seven months pregnant when she was hit by a van on August 14th on Webster Avenue and 188th Street in Fordham. The impact launched her into the middle of the street, where she was hit by a school bus.

More than 20 bystanders worked together to lift the 10,000-pound bus off of her, but she could not be saved. She was pronounced dead shortly after doctors performed an emergency Caesarean to deliver her premature son, Sean.

But Sean died Friday after eight days in intensive care.

Sanz was described as a joyful person full of love. The loving wife donated a kidney to her husband four years ago.

Outside the funeral home Monday, friends and neighbors reflected on the loss.

"It's heartbreaking, it is. It's devastating," said Officer Myrna Braxton. "We were praying for the baby. Unfortunately, he could not survive. I hope he's in a better place. He's with his mother."

"This story hit me like a ton of bricks. I was just hoping for the father's sake that the baby would survive. The Lord's will was to take the baby and be with his mother in heaven," said mourner Clarence Canty. "You just have to stick to the will of God. But for those who are driving a vehicle that's not safe. I hope this will be a warning to them."

"This is something I will never, never forget," said Yvonne Gordon-Owens of the Traffic Investigations Unit. "Seeing the baby like that just broke my heart."

The driver of the van, Walter Walker, 72, faces charges of criminally negligent homicide and driving without a license in connection with the incident. He has said his brakes failed and police found they were so bad that the van was not safe to drive.

"We need to be responsible for our cars and make sure our cars are in perfect working condition because we know things fail and we need to be responsible for our actions," said Traffic Agent Supervisor Mable Dilligard.

"She went way ahead of her time. It wasn't her time, but life is so unfair," added traffic agent Aleida Roberto.

The union that represents traffic agents said that it will be asking the mayor to rename a portion of Webster Avenue in honor of Sanz.