A judge handed down the maximum sentence Monday to a husband and wife convicted in a hit-and-run crash that killed one USC student and left another seriously injured as they walked home last year from a fraternity party. Judge Robert J. Perry issued a sentence of eight years in prison for Claudia Cabrera, the driver, and seven years for Josue Luna, who was riding in the front passenger seat. Their 7-month-old son was in the back.