The outcome of the race may seem inevitable, but the balance has been redressed by hosting the event in central London, complete with its infamous traffic jams.
The 3.8-mile race has already taken place through the streets of London, but Alfa Romeo has promised to only reveal the winner in August as part of a new advertising campaign for the small Alfa Romeo MiTo.
Designed to highlight the car’s qualification for exemption from the London congestion charge, the MiTo used for the race was a 1.3-litre JTDM 85bhp version.
With CO2 emissions of 95g/km, the car qualifies for exemption from the charge and falls into the lowest band of Vehicle Excise Duty – meaning an annual fee of zero.
While the MiTo was forced to navigate busy traffic, its small dimensions should help the three-door supermini during the race.
Thomas meanwhile, has similar traffic problems. He said: "I’m a 400 metre runner not a four miler, but I think I can do it. I need to pace myself and try not to get lost. Hopefully there won’t be too many coach loads of tourists blocking my path. My competitive instincts are still with me, I’ve got to win."
Alfa Romeo will release clues about who triumphed in the race in the run up to August, when the winner will be revealed.
The Alfa Romeo MiTo recently underwent a transformation with a new ‘Sprint’ edition launched with the 1.3-litre engine.
Other specification levels include entry-level Progression models, priced from £12,250, Distinctive and range-topping Quadrifoglio Verde, which replaced the Cloverleaf versions as the sporty performance option.
The 2011 Alfa Romeo MiTo is on sale now from Alfa Romeo dealerships, where it is joined by the new Alfa Romeo Giulietta hatchback.