Things like this.
Formula 1′s Leading Team Has a Big Secret – Wired.com: “That’s where the engineering conspiracy theories begin.
The leading speculation, posited by Racecar Engineering, is that Red Bull has managed to link the suspension in Vettel’s RB9 to the hybrid Kinetic Energy Recovery System (KERS) onboard. KERS has been around for a few years and gives drivers a power boost in short bursts, and because it’s an electric motor, the torque output can be tweaked on-the-fly — just like a traditional traction control system.
By linking the suspension to KERS, when the pressure in the shocks changes while going through a corner or over a bump, the RB9 could limit power when compressed and boost power when expanded, all without interacting with the ECU and running afoul of the FIA’s regulations.
But there’s a tell. A very loud one, in fact.”