Since Customs is now a part of DHS, i'll bet that if it includes traffic tickets, their database includes the seizure notices they send out:
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Government data-mining lives on
June 1, 2004, 6:00 AM PT
By Declan McCullagh

Congress managed to pull the plug last year on the Pentagon's data-mining plan known as Total Information Awareness, but it turns out that the effects were only fleeting.
A new government report reveals that federal agencies have undertaken 199 data-mining efforts, 131 of which are already operational. A surprising number resemble clones of the controversial Total Information Awareness project, which was intended to peruse exabytes of data on Americans assembled from every source possible as a means to snare terrorists.

Some of the highlights of the General Accounting Office report, which represents nearly a year of investigation:

• The Department of Homeland Security is creating an Incident Data Mart designed to assemble data from every state, local, and federal police agency and spot possible terrorist activities. The data mart will sort through logs of incidents, defined as any "event involving a law enforcement or government agency for which a log was created, e.g., traffic ticket, drug arrest, or firearm possession.