Here is a $6 Keychain camera vid:
08222010 AX lap1.WMV - YouTube
$6 Keychain camera with Harry's lap timer overlay:
http://www.youtube.com/watch?v=9Jhon6smlcI
This ultra-cheap video solution is definitely not high resolution due to a very simple lens and CCD but it works well as a security camera or for driving analysis that doesn't require "Spielburg" quality. Sometimes simple and small are desired features. If it breaks, throw it away!