Quick newbie questions.....

1) Is the intake on the roof for driver ventilation?
2) Does the driver consult with an engineer prior to shock tuning between stages?
3) Is there a development freeze on chassis, body, and/or engine to contain costs? I think I heard three years. What can the teams do during that time in terms of development?
4) These cars costs $900,000 US compared to a NASCAR at $250,000 US. NASCAR struggles for sponsorships and TV packages to keep teams alive. How does the WRC do it?...Maybe not a purely technological questions, but indirectly related.

Thank you