the monaro was the coupe form of the Holden Commodore
That particular car is the HSV version of the Holden Commodore from 1999.
The VXR8 we get in the UK now, is the HSV version of the 2008 commodore.
They used to make a 2 door Commodore coupe, called the monaro. But when the current model came in (the model you see on the VXR8) they dropped the coupe so Vauxhall imported the saloon instead.
It will have the same 5.7 CV8 engine as found in the very earliest 2004 monaro that you will see on the early series of Top Gear. Similar affair,cheap interior, big american corvette V8, cheap price tag, handles and drives very well. Never officially imported here (unlike the VXR8 and monaro) so will be an ultra rare car. Definately a bit of a talking point down the pub.