In-Motion Outtake: A Vauxhall with Oregon Plates?

This morning on the way into work I got passed by what I casually thought was a blacked-out VW hot hatch, a fairly common sight around Portland. Then I saw that big round badge did not say VW, it was the Vauxhall griffin! But with Oregon plates? How can this be? I’m not able to identify its year or model. Best guess is a 2008-2010 Vauxhall Corsa, but the badges don’t match ones I see on the web, and its little bumper corner features aren’t present on this car. GM hasn’t sold Vauxhalls in Canada for some years, have they? Is this an ex-pat British car, that somehow got past the EPA and DOT importation barriers and registered in the US?