Drew Bodden, 37, turned himself in to police Thursday morning, one day after being discharged from the hospital.
Bodden will be charged with 3rd degree murder and two counts of aggravated assault by vehicle.
Prosecutors say Bodden was going a minimum of 140 miles per hour in a souped-up Shelby Cobra Mustang when he slammed into a Honda CRV on Thanksgiving Eve.
The crash killed 9-year-old Holly Huynh of Pipersville and put her grandmother and another woman into the hospital.
"At night on one of the busiest travel days of the year, on a stretch of roadway that although it is four lanes with limited access sees a great deal of traffic, traveling at that kind of rate of speed is beyond reckless," said Bucks County District Attorney David Heckler.
The crash happened at 6:30 p.m. on Wednesday, November 21st on the Route 611 bypass near Broad Street.
Investigators said Bodden struck the Honda CRV that Huynh was riding in. She was a passenger in the vehicle being driven by her 55-year-old grandmother. The Honda was in the left lane doing about 55 miles per hour when it was rear-ended by the Mustang, investigators said.
The Honda ended up off the side of the road about 200 yards from the point of impact. The Mustang travelled another 100 yards further and landed in the median.
Investigators say the Mustang Cobra was built for speed and was fitted out with after-market performance enhancers.
Bodden, Huynh's grandmother, and a passenger in the Mustang were injured in the crash.
The obituary for Huynh, posted on the website for Shelly Funeral Home, said she was a 4th grade student at the Groveland Elementary School where she was a straight A student.
Photo from Shelly Funeral Home