Mainly more side impact protect. Better cockpit intrusion protection, even the new FIA strutures have gaps, that fence post would go thru'. They should be using stronger glass. Crash test for each model.

I would bet that The NASCAR Car of Tomorrow side impact protection Impaxx foam structures could be fitted to most rally cars. Fairly low tech and relatively cheap.
http://automotive.dow.com/automotive...arpresskit.htm

IMPAXX foam is designed to absorb and attenuate energy in a crash. The energy of the impact is managed through a series of controlled reactions within the foam. The result is a controlled release of energy, allowing forces to be better spread throughout the vehicle from the time of impact to the end of the crash sequence.

While safety was the primary driver in the move to the Car of Tomorrow, efficiency of use is another important factor, and one in which IMPAXX foam also contributes. The material benefits from a well-tested and flexible manufacturing process that adds greatly to its ease of adaptability for specific NASCAR use, therefore making the solution very cost efficient.

Just as in mass production passenger vehicle use, IMPAXX foam benefits also include:
Being up to 50% lighter than comparable energy absorption materials and 30% more efficient

Consistent performance at temperature extremes

Great flexibility in fitting into pre-determined spaces, as it can be cut and shaped into any form and size

Fast and efficient production methods enable great reliability in supply

http://automotive.dow.com/automotive.../20070122a.htm

Just look at F1 this year. Coulthard and Wurz crashed into each other. Thought it was abit too scary, and have now pushed through a safety upgrade for next year. Ever heard that happening in the WRC.

The FIA have been very slow to push changes thru'. Much of the research into side impact protection came after Audi and Mercedes worked together after Keith Odor's fatal crash about ten years ago. Much of what was learned went into DTM years over five years ago. Even V8 Supercars this year have moved the driver seat away from the door and improved the side impact structures. There hasn't been a major upgrade in side impact structures in Rallying for a long time. Hope this is only the first new chapter of improved safety in rallying.

Gabriel