The extended electric vehicle, which recently completed the longest trip made by an electric vehicle on UK roads, is currently touring the country to showcase the electric-hybrid powertrain technology.
Erin O’Connor welcomed the Ampera to London wearing a suitably electric-themed dress by designer William Tempest.
She said: "I’m a real supporter when it comes to helping the environment, and the Vauxhall Ampera is a massive leap in the right direction, so it was an easy decision to welcome it to London."
The Ampera is not due to be released until 2012 in the UK, but Vauxhall is giving an electric Ampera away in a Europe-wide competition to find the most efficient driver.
The UK contestant, Helen White, has travelled to Sweden to drive some of Vauxhall’s most efficient and cleanest models, including the ecoFLEX Astra, Insignia, Corsa and all-new Meriva.
Contestants from 20 countries will have to drive distinctly different courses in the most fuel-efficient manner to be crowned the champion and drive away in a new Vauxhall Ampera E-REV.
The runner up will win an Astra ecoFLEX 1.3 CDTi capable of returning 68.9mpg and emitting just 109g/km – enough to qualify for zero first year road tax.
Third place will win a Corsa ecoFLEX, again with the 1.3 CDTi engine, which delivers 76.3mpg on the combined cycle.
The Ampera, built on the same platform as the Astra, has a range of 350 miles, 40 of which can be driven using electric power only.