The driver of that vehicle probably got more of a fright than he did, Mr Elley said.
Several local residents and motorists travelling behind him stopped to check if Mr Elley was all right. He was uninjured.
While he was a bit shocked, he was more worried about whether he had hit anyone else, he said.
The crash stopped traffic in both directions for more than an hour, as there was no alternative route.
Three or four cars were thrown from the top level of the unit.
Although the rest remained on the trailer, they were all damaged.
Mr Elley said the cars and the trailer were write-offs but the truck might be salvageable.
Taihape police Sergeant Mark Toms said the crash took five hours to clear. The road was opened to one lane about an hour after the crash, but was not opened fully until about 2.20pm.
A heavy haulage truck from Wanganui was called in to remove the cars and the trailer from the road.
- APN