Jeff Cardon of the Microsoft OneNote development team has started a new blog on OneNote Tips & Tricks:
OneNote is a true "killer application", especially for driving enthusiasts. Look over my prior Microsoft blog postings, or especially at this one where OneNote and a TabletPC is used to record track tips right on a map of the track. See the postings here: http://www.drivingenthusiast.net/sec-blog/categories/computersMicrosoftOffice2007/2006/02/28.html#a1329
and the track map here:

Whether you've got a TabletPC or not, this is the killer way to store your notes at the track. Alignments, tire pressures, other setup infirmation, notes on the track, events results, and more. I also use it at my work and on my home PC - everything is stored in OneNote, nothing is written on paper, and everything is searchable (even your handwriting and images).