They've used those units in Japan (amoung other places) for a few years now.
In Canada we still mainly use the imperial system when taking about the power a car has.... but it seems it'* going the way of the "mile".
The metric system is here, and it'* changing what units we measure our cars in.
Even on Pontiac.com'* website... they now have both listing for the G6.
Quote:
Engine, 3.5L 3500 V6 SFI (201 HP [150 kW] @ 5600 rpm, 220 lbft [304.0 Nm] @ 3200 rpm)
Engine, 3.9L 3900 V6 SFI (240 HP [179 kW] @ 6000 rpm, 241 lbft [339 Nm] @ 2800 rpm)

Even in Need for Speed Underground 2, the cars are measured in kW and Nm.
In GT4 things are measured in metres..... so the 1/4 mile is now the 400m drag.
While I'm not used to these units of measurement yet, I'm sure I will.
But does anyone know the formula'* for converting to/from these units?