In 1994, a cab driver was killed over $40. Nearly a decade later, the case against his then-15-year-old killer finally concluded Tuesday when attorneys reached an agreement that would send Antoine James O'Neal to prison for 33 years. Because O'Neal already has been locked up for nearly 10 years, he's immediately eligible for parole, his lawyers said. O'Neal, now 24, has been behind bars since he was arrested for the November 1994 robbery and shooting death of cab driver David Mancil