Do you think you are safe from the TSA in your own car? http://www.flyertalk.com/forum/travel-safety-security/1153902-tsa-goes-mobile-strip-searched-you-walk-down-street-drive-your-car.html
They are talking about X-raying cars (or similar technologies). It would be interesting to see what the USSC does with this. Currently, even though a warrant is laughably easy to get, one is still needed to search a car whose driver refuses it.