Richard Greeves said yesterday he wanted to thank those who tried to help his son, Madison Luke Ford-Greeves (20), who died at the scene of the head-on collision in Centre Rd, near Allanton, at 12.40am on Saturday.
Police had revealed two people stopped to provide assistance at the crash scene.
''I'd like to say thanks to the people who stopped to try and help.''
He also thanked the emergency services that attended, he said.
The funeral service was being planned for Friday, Mr Greeves said.
Friend Ricky Welsford said friends of Mr Ford-Greeves were ''roughed up'' by the death.
''He was a real good guy. I still can't get my head around it.''
Mr Welsford, a Taieri Amateur Wrestling Club member, said he dedicated the title he won at the New Zealand national wrestling championships in Dunedin at the weekend to Mr Ford-Greeves, a former club member.
''He was a good wrestler and a well-rounded guy.''
Mr Ford-Greeves had stopped wrestling at the club about three years ago.
Sergeant Ed Baker, of Dunedin, said a 25-year-old woman was in a critical but stable condition on Sunday.
Police had not spoken to her yesterday and were unaware if her condition had improved.
The cars, a white Mitsubishi, and a red Holden, were extensively damaged in the collision after one crossed the centre line, Sgt Baker said.
