Wow, the Christian Science Monitor reports that American Science & Engineering has  sold hundreds of vans equipped with backscatter X-ray equipment.

Backscatter X-Ray of Truck

Backscatter X-Rays from a Truck Near You?

As their website states,

AS&E systems are safe and effective. “Flying Spot” allows systems to produce images while emitting a substantially lower radiation dose to both the cargo and the environment than other X-ray inspection systems.

I feel better already.