A West Australian speedway racer accused of killing two motorists in a head-on crash in the US has fired his defence lawyer and petitioned a northern California court to replace his attorney. Luke Nardini declined to comment on why he had decided after three months to replace his lawyer but the move is likely to delay his trial by several months as his new legal team prepares to take over his case. On Wednesday, San Mateo County Judge Elizabeth Hill granted Mr Nardini’s motion to bring in defence attorneys May Mar and Geoffrey Carr to replace his former attorney John W. Noonan. Citing attorney client privilege, Ms Mar, a former San Mateo County prosecutor, also declined to explain the move, but said “Mr Nardini has a right to retain whoever he wishes”. The latest hearing was supposed to be an opportunity for the prosecution and the defence to discuss the case ahead of a trial, which still does not have a start date. However, as a result of Mr Nardini’s decision to replace his legal counsel, the pre-trial conference hearing was postponed until February 6. Mr Nardini, 31, is accused of driving a white BMW on the wrong side of the road near La Honda, south of San Francisco, before crashing head-on into a Ford Taurus carrying four people. Jack and Linda Davis were back-seat passengers in the Ford and died from their injuries. Two others were injured. Mr Nardini, from a well-known Narrogin family, is charged with two counts of misdemeanour manslaughter as a result of the crash, which happened on September 1. The California Highway Patrol is still investigating the accident, and Ms Mar stressed that until all the facts of the case were known, Mr Nardini’s case would remain in a legal limbo. “It is a tragic accident,” Ms Mar said. “Mr Nardini is beside himself and quite remorseful for the tragic death of two people.” In October, Mr Nardini was dealt another blow after the victims’ family launched a civil lawsuit for “unlimited” damages. Court documents obtained by The West Australian show relatives of Mr and Mrs Davis launched the case in the Superior Court of the State of California. The documents show the plaintiffs are suing for wrongful death and general negligence involving a motor vehicle, and that the action is an “unlimited civil case” — which means the amount sought exceeds more than $25,000. The case has been brought by Diane Hughes and Victoria Davis, Mr Davis’ siblings, and by Denise Hughes, Donna Lembke and Steve and Frank Cabezus, who are Mrs Davis’ siblings. It is alleged the family suffered a “loss of comfort, society, protection and support and funeral and burial expenses as a result of the wrongful deaths of Jack Davis and Linda Davis”. “Defendant Luke Nardini negligently failed to act as would a reasonably prudent motor vehicle operator under the same or similar circumstances,” the court documents allege. They are seeking compensation and other damages “according to proof”. The civil case is to be heard for the first time early next year.