Audi sure knows how to tease us, and a 600 HP version of the new Audi TT with an outlandishly entertaining rear wing and a clever electric biturbo fits the bill. The Audi TT clubsport turbo concept debuts an electrically powered compressor, fitted alongside the more conventional turbocharger, with the e-turbo taking charge of low-end boost without the traditional turbo-lag. That’s enough for a 3.6 second 0-60 mph time, Audi claims.

Normally, turbochargers are powered by exhaust gases from the engine itself. That can deliver a potent thrust once the powertrain has spooled up to a certain point, but below that threshold there’s a wait for the peak power to kick in.
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