A classic 1966 Lotus Cortina took Kerikeri man Phil Sharp 10 years to lovingly restore to pristine condition.
But his beloved car, which would cost about $70,000 to replace, was gone in the less than the time it took for a round of golf after a thief stole the white and green vehicle last week.
A gutted Mr Sharp is offering a "substantial" reward for information that leads to the recovery of the car and arrest of the thief, who was last seen heading towards Kaikohe.
He bought the car "as a wreck" while living in the UK in 1990. He spent 10 years painstakingly restoring it from the ground and brought it back to New Zealand with him in 2003.
Mr Sharp seldom drives the Cortina, but last Wednesday took it to the Bay of Islands Golf Course, in Kerikeri, about noon as his regular car was having a windscreen repaired.