With pro-congestion charge London mayor Ken Livingstone on the way out, there are a lot of questions about what happens next regarding the city's vehicle laws. At least one company, NICE, thinks electric car sales will increase under incoming mayor Boris Johnson, who is against the C-charge. In this time of flux, the UK-based website Clean Green Cars is offering Johnson ideas on how to "help frame a revised Congestion Charge that will be both fairer to motorists and more effective in reducing overall pollution." CGC is against Livingstone's congestion charge plan and hopes that its more moderate plan will be the new standard in London. The highlights of the plan include:

• A stricter target of 110 g/km CO2 for cars qualifying for the lowest charge be applied
• Vehicles achieving 110g/km or below should be charged £4 rather than being allowed in for nothing
• Vehicles emitting more than over 225g/km should be charged £12 rather than £25

There are more details about this plan after the jump, but that 110 grams of CO₂ level catches our eye. With so many automakers able to bring out vehicles that just ducked under the old 120 level thanks to minor tweaks, pushing the target down a bit further is an interesting move. We'll see if Johnson likes what he reads.

Once the new London congestion charges were officially announced earlier this month, Porsche started a legal process against the Transport for London group (TfL is behind the c-charge). London officials responded to the threat and in response Porsche has put out a slew of numbers to defend their stance that the congestion charge won't reduce CO₂ emissions in the slightest. You can read their argument for yourself after the jump or check out the company's new website dedicated to the fight.

Porsche's basic argument goes like this: the emissions the fees on gas guzzlers in London will prevent in a year will be equal to the emissions generated at Heathrow airport in anywhere between four minutes and four hours. What Porsche isn't tackling in this debate is that the name of the fee is a "congestion charge." While taking a car off the streets is a car off the streets no matter what comes out of the tailpipe, the Transport for London organizers have decided that swapping out dirty cars for cleaner ones is the right move. There's no question that a lot of CO₂ enters the sky at Heathrow, but that's no excuse for spewing it in downtown London. Instead, it should be a call to clean up the vehicles at Heathrow.