A young motorcyclist who drove at more than 150kmh through suburban Dunedin acted like a "lunatic", a judge says.
When Kenneth Michael Cowie (20) saw the flashing lights of a police car on January 27 this year, he panicked.
Police had noticed him as he had sped along Andersons Bay Rd doing 120kmh on his Suzuki motorcycle.
They observed him turn left into Princes St and accelerate to 135kmh in the 50kmh zone before they turned their lights on.
"Adrenaline rushed in his system," counsel Jo Turner said at his sentencing in the Dunedin District Court yesterday.