Nicola Wolfe/Fairfax NZMini Mack: Doug Kearns with the 'mini Mack' he and Brett Shaw built this year. A mini Mack truck has got truckies talking at a North Otago truck stop. The custom-built mini-Mack is the "labour of love and frustration" of Doug Kearns, of North Otago Hotel and Motels. He plans to use it to raise money for charities fighting children's cancer. Nicola Wolfe/Fairfax NZBig engine: The Mack has a Kholer Courage 15 engine and is driven from the front trailer. Kearns has wanted to build the truck for the past five years after seeing a similar one in Timaru. He built the truck with Brett Shaw. The truck took four weeks and two days to make and cost $25,000. "I bought a Husqvarna and cut it in half. That's how it started," Kearns said. Nicola Wolfe/Fairfax NZSmall beginning: Doug Kearns said the truck started off as a Husqvarna mower cut in half. The truck is made of steel and everything was resourced locally. "A few bits and pieces were donated - pipes, side mirrors," Kearns said. It even has a running Kholer Courage 15 engine and runs a little over 10kmh. Kearns said at the moment the truck had only been used on the grounds but that he would like to find out whether it can be taken on the road. The Mack is based on the truck in the opening of the 1978 movie Convoy. "It started off as an early R-series Mack but because of the size we couldn't get the curve to make it nice and round. The truck drivers say it [looks like] a freight liner Mack," said Kearns. The trailers for the truck where built in late 2014 as part of his business float for the Oamaru Christmas Parade. They can seat about 10 children. At the time Kearns pulled the trailers with a ride-on mower. They won Best Business Float. Kearns plans to utilise the truck for a Show and Shine event at the truck stop on February 22. Proceeds from the rides will go to support North Otago children with cancer. Donating to children's cancer is something Kearns said he and partner Diane have always wanted to do. "I think we always wanted to do something along those lines. Now we are here it just seemed right to do something like this now," Kearns said. The couple said they wanted to ensure that the money is used to support a local charity and local families. "I think everybody needs to give back at some stage in their life." He said he hopes to run the event every year and would like to see the Oamaru community support it. There will also be a number of other events including an auction and activities for the children. The bar and kitchen will also be open. Kearns said the experience has been "absolutely brilliant". "I really enjoyed it and would do it again." He said he already has plans to build another. - The Timaru Herald I saw this and wanted to share it from Stuff NZ