Little Eli was critically injured in the collision, and for weeks his chances of a normal life were touch and go. Thankfully, Eli survived and is now a healthy and happy young boy.
Ten years on, Kellie started the "Thank You Project" to track down the people who helped to save her son's life after the accident - from the paramedics who got him to the hospital on time, to the nurses and doctors who fought hard to save him.
In this touching video, Kellie revisits those "heroes" to show them her unending gratitude and tells them the story of Eli's life since the accident.
Get the tissues out for this one:
