he may be paralyzed from the waist down after being injured Sunday during a clash between bikers and a Range Rover in Manhattan

The group of riders then surrounded Lien's vehicle.

"They take their helmets and start to dent his car, and apparently his tires are slashed there with a knife," Police Commissioner Raymond Kelly said.

Mieses, who lives in Lawrence, Mass., can be seen on the video getting off his green bike to check on Cruz, his aunt said. He was standing near the SUV when Lien suddenly took off and ran over him, she said.

Police said Mieses suffered two broken legs, but family members said his injuries were far more severe and include a torn aorta, broken ribs and spinal damage that will probably leave him paralyzed.

“He damaged myson’s life forever," his mother, Yolando Santiago, told NBC affiliate WHDH. "He is never going to walk again."

After Lien took off, other members of the crew forced him on a harrowing chase. They cornered him at one point and managed to yank open his door, but he gunned it and sped away again, the video posted on You Tube shows.

After a 50-block northbound pursuit, he got off the highway and stopped on a side street in upper Manhattan, where video shows one motorcyclist smashing in the window with a helmet.

Police said the gang pulled Lien out of the car and assaulted him in front of his wife and child, slashing his face and chest. He was treated and released from Columbia University Medical Center.

YouTube Christopher Cruz slows his