A South Australian man who broke his diet to indulge in some sneaky hot chips while driving has paid a heavy price for giving in to temptation.

The 56-year-old from Mount Gambier was driving down the Princes Highway at Heathmere in Victoria on September 3 when he began choking on one of the deep fried treats.

In dramatic dashcam footage of the incident, posted online by friend Matthew McInerney, the driver can be heard coughing as he tries to clear his airways.

The driver then blacks out and the car veers off the road at 80km/h, smashing the windscreen and rolling into a ditch.

The video ends as the man regains consciousness and tries to get out of the car.

A police spokesperson told ninemsn the driver was taken to hospital with minor injuries.

In his video description, Mr McInerney said the driver was unharmed.

A source close to the crash investigation said the man has been on a "strict diet" at the time of the accident and "chips were an absolute no no".