Ryan Sherman texted his father at 9:30 Wednesday night and said he was on his way home.
The 15-year-old would be riding his skateboard two miles after a concert at Garden Spot High School where he's in ninth grade.
At 10:03, the teen texted again and said he was almost there.
He never made it.
Minutes later, Sherman was struck by a hit-and-run driver as he rode his skateboard in the 600 block of West Main Street (Route 23).
Although he was wearing a helmet, the teen suffered a severe head injury and was in critical condition Thursday at Hershey Medical Center.
Rich Sherman said doctors were trying to stop bleeding and swelling in his son's brain so they could operate on his leg which is broken in two places.
He also said Ryan was running a low-grade fever of 104 degrees.
"He's unresponsive. He moves his leg or a hand every so often but ... nothing more," Rich said.
He described his son's condition as "a waiting game."
Rich Sherman attended the concert Wednesday night with his son but had to leave early because he had to get up at 2 a.m. for his job as a truck driver.
"I told him to take his skateboard and ride back," Rich said. "It wasn't far so I figured he'd be OK doing that."
The driver who struck Ryan fled west on Route 23 after hitting him in front of Keen Compressed Gas Co., 605 W. Main St., New Holland, according to police and witnesses.
Police initially believed the striking vehicle was white in color but after reviewing surveillance video from the area, now say a dark-colored vehicle, believed to be a sedan, struck the teen.
Witnesses said Sherman was riding his skateboard in the westbound lane when the car struck him from behind and never stopped, New Holland police Lt. Jonathan Heisse said.
Police said the vehicle that struck Ryan possibly has front-end damage and asked anyone with information to contact them at 354-4647.
Ryan's father said his son is "a fun kid" who loves the outdoors.
"He loves to fish. He likes camping, riding his bike and skateboard — but he's also a real polite kid who would do anything to help somebody else."
The teen was planning to go out for the school's cross-country team next year, according to his father.
Ryan has two younger sisters and a younger brother but lives alone with his dad.
The two participated in the Make-A-Wish Convoy the past two years.
"I don't understand how someone could do this," he said of the driver who struck his son then kept going. "I hope if somebody knows something they'll call police."
Counselors and teachers are assisting Ryan's classmates as needed, Eastern Lancaster County School District Superintendent Robert M. Hollister said Friday.
"At this point, we are waiting to hear more about Ryan and how he is doing," he said. "We wish him a speedy recovery and hope that he can rejoin the school community as soon as possible."
Staff writer Ryan Robinson contributed to this report.