Shares of General Motors reached an important milestone on Saturday, closing above their initial public offering price of US$33 for the first time in more than two years.

The New Zealand Transport Agency plans to phase in a 12-month warrant of fitness from October, nine months earlier than originally planned.

New Zealand is perfectly positioned to road-test the next generation of ultra sustainable "green cars", which could play a crucial role in our future, a visiting US innovator says.