The victim suffered a broken back.
Police arrested Eric Olvera Nieto, 21, at his girlfriend's home in Ripon, after he ran from the Oct. 4 accident scene. According to the district attorney's office, Mr. Nieto rear-ended the motorcycle at a red light, throwing the victim onto the hood of the car.
Mr. Nieto was unlicensed, and fled because he was in the United States illegally, said the district attorney's office. He remains in custody on $50,000 bail, and will be sentenced on Dec. 3.