Tesla Model S news - Tesla tease - 2009

More pictures of the Tesla Model S

On March 26, Tesla will officially unveil its all-electric four-door saloon, the Model S. Just to keep you keen – as if the thought of a zero emissions (well, sort of, but let’s not start that one again) family car with performance to rival the new Porsche Panamera wasn’t enough – Tesla has released this oh-so-cryptic teaser picture.

Actually, it has released two oh-so-cryptic teaser pictures: click on that bit of blue writing-stuff under the headline and you’ll see a dark, moody shot of the Model S’s roofline. Mmm, swoopy.

So what do we know about the Model S? Well, it’ll have a similar electric powertrain to the Tesla Roadster, which develops 248bhp and 275lb ft of torque through a single-gear transmission.

Because of its greater kerbweight, the Model S won’t be quite as quick as the lightning-fast Roadster – though it’ll hardly be tardy: expect a 0-60mph time of just under six seconds… as opposed to just under four seconds for the Roadster.

It should be cheaper than its two-door cousin, too. Though we don’t know the list price of the Model S yet, Roadster owners are being invited to join the waiting list for a refundable deposit of $40,000 – though after the late March unveiling, the rest of us proles will be able to order a Model S for a $10,000 deposit.

So which would you have? One of these… or a Fisker Karma?