Star of the show at this year's St Patrick's Day parade in Killarney was undoubtedly this one-off conversion, the brainchild of Padraig Weldon from John Deere's southern Irish dealer Seamus Weldon Groundcare Machinery.
"We were trying to think of something a bit quirky to promote the dealership and catch the public's imagination during the parade, and this is what we came up with," says Padraig.
"It was quite a quick job in the end - we removed the wheels from one of our demonstration machines, built a new sub-frame, put some flotation tyres from a 3520 compact tractor on the back, and dropped the front axle onto the frame, complete with power steering, plus a new exhaust and a rear spoiler with our website address, www.seamusweldon.com.
It was pretty noisy, the engine sounded more like a low flying aircraft than a lawn tractor, but it had the desired effect - and all the kids in the crowd recognised the driver!"
Look out for the John Deere monster mower clips on YouTube - and turn up the volume to get the full effect of the V8 style engine.