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Graham Erhart brings decades of motorsport and business experience throughout multiple codes of bitumen and dirt track racing, The Erhart’s have achieved three consecutive Australian Titles and numerous state titles while campaigning Modified Production Sedans prior to moving to open wheeled V8 Sprintcar racing in 2005.


Since launching into Sprintcars they have achieved many podiums including a World Series Sprintcar Round, The Prestigious Will Power 500 and runner up in the 2016 Queensland State Title whilst running one of the top commercial Sprinter teams in the country backed by some of the biggest national and international brands.


Graham and his team at GW Racing share a passion for race car setup that has lead them to stocking some of the biggest brands in the motorsport industry including Driven D1, Bilstein, American Race, SLADE Shocks, Keizer Wheels and race winning car setup and maintenance at their Postman’s Ridge (Queensland) based motorsport workshops and showroom.


The owners of GW Racing, Graham and Wendy Erhart have extensive business experience growing Australian largest horticulture business while both having successful motorsport campaigns over multiple codes, Graham has either Raced, Owned or managed race cars and teams for over 45 years.


As founders of Withcott Seedlings, a leading Australian horticultural business Graham and Wendy have experience in business management, entrepreneurship and horticulture. In their current venture, Graham and Wendy offer their experience in motorsport competition and management, mechanical design and engineering.


Graham Erhart

Graham’s knowledge is frequently sought after within the horticulture industry due to his ‘straight forward’ approach to problem solving, and his proven ability to take innovative concepts from idea through to commercialisation. As a business manager, Graham’s expertise was recognised by the Ernst & Young Business Awards in 2005.


 In particular, Graham has experience in:

  • Nursery design and management

  • New crop variety development

  • Water recycling

  • Nutrition and pest management

  • Transport logistics

Beyond horticulture, Graham is also experienced in mechanical design and engineering having designed, constructed and owned two Australian Modified Production Title Holden Commodores, winning three consecutive Australian Titles. Graham continues to develop these innovations under the banner of GW Racing.


Wendy Erhart

Wendys expertise lies in business management, workplace health and safety, systems thinking and innovation. In 2005, Wendy was recognised internationally as "Australian Business Woman of the Year" by the prestigious champaign house Veuve Clicquot putting her on the global business stage as a true leader in her fields.

Wendy has also held a number of board positions, including Qld Ministerial Board for Workplace Health and Safety and was a member of the National Food Industry Council, chaired by the Federal Agricultural Minister the Honourable Peter McGauran and most recently with Griffith University in Queensland.

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