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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.

Higher gas prices? Blame ethanol

MarketWatch reported today that the price of ethanol has seen a 30-percent price increase so far this year, taking the price of gasoline up with it, since a good majority of "gasoline" sold today is around 10 percent ethanol. The average price of a gallon of gas today is $2.30, according to FactSet data, but this has varied since the beginning of 2014. Despite the recent surge, ethanol prices have also proved to be rather volatile with reports of it dropping 8 percent this past Thursday after falling 10 percent just the day before.

Caterham Supersport R extends Caterham 7 range

Caterham has added the Supersport R to its range of ’7′ models with a 2.0 litre Duratec Ford engine delivering 180bhp. In the meantime, Caterham’s core road car business is the old Lotus 7 range of Caterhams, so it makes sense to keep that more appealing and relevant until new cars start to arrive, so we get the Caterham Supersport R as an addition to the range to slot in between the Supersport and the Superlight models. The Supersport R gets a Ford Duratec 2.0 litre engine which produces 180bhp, which doesn’t sound a huge amount, but when you consider the Supersport R weighs in at just 535kg it starts to look plenty.