Mexican government uses trucks for 20 hours daily and in offroad environments, beyond design. Reliability meets promises to customers. Efforts being made to improve sturdiness. As for limitations on inspection capabilities, exploration of complimentary inspection technologies underway. Possibly, "ion" detection, do you suppose?
Ion detection is "smell detection" in layman's terms and I am a layman. Essentially, this type of equipment detects explosives and drugs the way dogs do. You can visit the website of idsdetection.com to get more info. I am also a stockholder of that company for the same reason as ASE.