The Detroit-Hamtramck assembly plant is now able to deliver more Volts as well as export-bound Opel and Vauxhall Amperas.

In the meantime General Motors is getting European journalists charged up by introducing them and others to its solutions for exorbitant petrol.

Recently, UK journalist Robert Llewellyn posted an over-10-minute video review of the Vauxhall Ampera. The video features him driving a left-side-drive (American style) car.

UK buyers are eligible for a £5,000 government grant for the Volt or Ampera. The Vauxhall Ampera is £33,995 (about $55,435) and will be made available in the UK Spring, 2012.

The quite similar Chevrolet Volt will be £28,545 (about $46,548).

Since the Volt is so much like the Ampera but $8,887 less, we asked a European Chevrolet media spokesperson why this was.

"Technically the cars are identical. Every brand has its own pricing strategy," said Cornelia Harodt. "Chevrolet bases the price on the U.S. price for a comparably equipped car plus costs for transportation, homologation, duties, etc."

Various sources are in the habit of publishing the UK Volt/Ampera prices as either pre-grant or post-grant. The actual price discrepancy is about £500 (around $820). When we first saw the price discrepancy reported in another reputable publication, we thought perhaps this was either a mistake or a radical price change since last time we reported on these cars, We attempted to avoid error by quoting these widely varying prices in question, and specifically asking several GM media reps. Unfortunately even though we eventually got one to comment, and another to say she had nothing to add, no one corrected the error so it made it to print.

What ever the case, Llewellyn is a regular reviewer of plug-in vehicles, and if his reaction is any indicator of how the buying public will respond to the Ampera, GM should be in for a fairly warm reception.

That is all we’ll say, lest we spoil his commentary.

[polldaddy poll=5270082]