A Masterton man's claim that he was "sleep-driving" when he crashed a car into a Wairarapa property may be derailed if he fails to get a sleep expert to give evidence at his trial.
Masterton man Darryl Cox, has pleaded not guilty to driving with excess blood alcohol and driving while holding a revoked license.
He has elected a trial by jury, set down for April.
It is alleged that on November 15, 2013, in the early hours of the morning, Cox was driving down French St in Masterton and missed the corner.
He then allegedly smashed through the wooden fence of a Roberts Rd property, destroying a goldfish pond and ripping up the lawn and gardens.