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Video: Tesla Model S Alpha undergoes on-track testing

The electric-car wizards at Tesla have released a sneak peek of the upcoming Tesla Model S Alpha undergoing on-track drive testing. The video provides a quick glimpse of three eerily quiet sedans, but not much more. Scintillating it's not, but it's nice to see the Model S Alpha sedan getting closer to production.

Kia GT could spawn Coupe and Estate

Kia GT could spawn 2 door coupe and estate variants The Kia GT Concept from Frankfurt is heading for production in 2013, and it looks like it could be joined by a Coupe and Estate. It’s not just Hyundai who are starting to push in to the luxury and performance territory currently dominated by the Germans, sister company Kia is getting in on the act too, with cars like the very convincing Kia GT we saw at the Frankfurt Motor Show this year. The Kia GT is a four-door swoopy coupe with RWD and a 3.3 litre turbo V6 kicking out 390bhp, 394lb/ft of torque and looking every bit as convincing as anything that could be considered competition.

Boris planning war on diesel car drivers – London Mayor wants drivers of diesel cars to pay more

Boris wants to charge diesel cars an extra £10 to enter London We’ve long banged on about the nonsense of basing the cost of motoring on the Co2 emissions of cars, and it seems the London Mayor, Boris Johnson, also realises that Co2-based taxation has led to a real pollution problem. As we reported as far back as 2010, petrol cars – certainly before the introduction of Euro 6 emissions recently – are far cleaner than diesel cars when it comes to the sort of stuff that really matters – NoX and particulates. And the problem has been exacerbated by basing car taxation on Co2 emissions as lower Co2 levels have been much easier for car makers to achieve on diesel engines, which is why diesel-engined cars now account for around 50 per cent of all cars sold in the UK.