Gaiger can be heard cursing loudly in the video, having stated on a social media post, "almost time for a costume change while going up the Kaimai's [Tuesday]."
The car appeared to be overtaking three other vehicles in its lane - a truck towing a boat, and two other truck-trailer units, one of which captured the same incident from a different angle.
However, it seemed the SUV failed to overtake and made a quick decision to drive along the furthest lane to its right, skirting the grass berm.
Video shows the car only managed to return to its side of the road as another truck approached.
The car could be seen with the branding of a Matamata business on its side. The SUV was a courtesy car from a local mechanic, and the business otherwise had no involvement in this incident.
Peter Henderson, owner of Action Automotive, wished to clarify that it was a courtesy car, as he had received a "number" of abusive phone calls after the incident.
Henderson said that Gaiger contacted him and sent the video. He then contacted the driver and sent the footage to police.
"It was lucky that it was our car," Henderson said, "because you couldn't identify the licence plates from the video, but you could see our company branding."
While it is legal to pass on a three-lane road if there are no solid yellow lines,
Waka Kotahi advises motorists to check that lanes are clear at least 100 metres ahead.