But hybrid technology has transformed versions of these family cars from conservative appliances into cutting-edge green machines.
And if that lovely cloud happened to come from a smokestack, at least this green machine would make it easier to breathe.
My day starts when I climb into my 'green machine' and switch on that 'phone.
"Three years ago, they were saying there was no market for a green machine - now they are saying that one is under development."
Their father saw no mystery in nature, just a green machine.
He perceived mysterious meaning where he had previously seen only the green machine.
Minty is described to be a green machine, who likes anything green.
A green machine came charging out of the pit.
With ample power and nicely weighted steering, this green machine is surprisingly fun.
How fast can you get up to in the green machine?