When Peter came home on the tractor late that afternoon he rang and was told the news that for the first time in decades they were the owners of a new car.
"I giggled, and giggled, and giggled," said Peter.
"I was supposed to go back on the farm and spread fertiliser but I was so happy that I couldn't."
Peter will continue using the tractor as his main mode of transport, and Chris will be driving the Mercedes.
"We've mainly had Japanese cars, and we've kept them for years putting 200,000 to 300,000km on them.
"We have more value in farm machinery than cars," said Peter, who runs a herd of 800 cows.
The Bellamys picked up the C200 yesterday from Hamilton, where Mercedes-Benz NZ's general manager Ben Giffin presented them with the keys.
"The C200 Dynamic Edition will provide Peter and Chris many years of Mercedes-Benz motoring pleasure at its very best," said Mr Giffin.
After receiving a quick run-through on how to drive the European sedan, the Bellamys had to leave Hamilton in their prize so Peter could get home in time for the afternoon milking.