Don't forget the "Holden Volts". We saw several of these at our plant tour 2 weeks ago. They are not Amperas, but are just like our Volts with different trunk emblems. Oh, did I mention that they are right hand drives? That looks kinda strange when you first look in the window.
There are also right hand drive Chevrolet Volts for the UK market. Probably not a huge number, but it isn't just Amperas over here. Last I heard mine is probably passing through Antwerp about now on its ever so slow trip to the UK.