Hoods blockage up is a comparatively common event in rally races. I've read that many teams specifically design the hood to leave a large gap if it flips up, thus allowing the driver to continue down the stage. This happened to a top driver at the latest Sno*Drift rally here in the US, and the video is pretty fun to watch.

http://youtu.be/c3fkwl2we14?t=7m18s