I was browsing around looking for logging regulations and stumbled across this. It's the United State's federal regulation on EDRs - Event Data Recorders - installed in automobiles.
EDRs are little log engines, like the "black box" flight data recorders on commercial airliners. They are typically part of the airbag system on an automobile. They record specific data about the operation of the vehicle including speed, etc., and they record incident data like airbag sensor activation or airbag deployment.
Anyway, if you want to see an example of a really different kind of logging, the PDF document of NHTSA rule 2006-25666 describes what data must be logged, and how often (sampling rate), and retention policy.
Sample logs are available here.
"They record ... speed, etc."
Throw in some GPS tracking and automatic data uploading, and you've got a handy way to automatically issue speeding tickets!
Not that I'm paranoid or anything. :o)
See: "Data- Driven"; Scientific American, 01/12/2004.