Neighbours say they could hear how fast a car was going before it careered off a suburban Dunedin street yesterday.
A bystander said the vehicle had become airborne after leaving the road.
A police spokesman said last night one person was assisting police with inquiries.
About a dozen onlookers at the corner of Matthew and Neill Sts, in Abbotsford, looked on yesterday afternoon as police spoke to a man understood to be the driver of a grey car that lay on its side several metres from the road.
The man, who appeared to be uninjured, was escorted to an unmarked police car.

Police confer outside an unmarked police car at the scene of a single-vehicle crash in Neill St, Abbotsford, yesterday. PHOTOS: LINDA ROBERTSON
His neighbour had grabbed a fire extinguisher because the cloud of dust the car created was so thick it was initially mistaken as smoke.
Longtime Neill St resident Graeme Reid said the speed limit along the stretch of road needed to be policed as some drivers used the road as an "absolute race track".
"It’s just hopeless. They need to do something about it," he said.

A car ended up down a bank.