When I was growing up the only personal data that existed for most
individuals was a social security number and perhaps a telephone listing. Now every
vendor I deal with can instantly retrieve every transaction I've made and account
financial records for years are retrievable online.
Soon your "file" will include every traffic light and scanner you've passed. Of course none of it is worth saving, but it will be!
You can see a non-zoomable version half way down this page: http://www.richardhess.com/family/travel.htm The zoomable "live" version is even more fun.