Trucks begin and end the convoy at the Edgar Centre. PHOTO: ALLIED PRESS FILES : Special Rigs for Special Kids - August 27

Catching the convoy of trucks cruise by is a favourite pastime for many families. PHOTO: ALLIED PRESS FILES : Special Rigs for Special Kids - August 27

A procession of trucks roll down Teviot St in South Dunedin at last year's Special Rigs for Special Kids event. PHOTO: ALLIED PRESS FILES : Special Rigs for Special Kids - August 27

Special Rigs for Special Kids has become a much loved event in the local calendar. PHOTO: SUPPLIED : Special Rigs for Special Kids - August 27

Organiser Greg Inch and his daughter McKenzie Inch are excited to celebrate the 30th Special Rigs for Special Kids event. PHOTO: SIMON HENDERSON : Special Rigs for Special Kids - August 27