Front Torque transfer system on the BAR last year? Although that was a development of an idea used by Benetton a few years ago.
I suspect that the inards of a lot of the gearbox's may be radical, but we wouldn't get to see.
However what is radical? Are we looking for rear engines, turbos, engine as a stressed memember, ground effects, active suspension? Well they only come a long once every ten or so years anyway (and have already been thought of).
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