An app and supported web-service to report polluting vehicles. Camera access to take a picture, then license plate recognition and automated reporting to the correct government agency.
Eventually he made it with me onto the I-280, but instead of reporting it, I spent the entire time becoming intimately accustomed to the incapabilities of my car's voice dialing system. I can't imagine something like that being legal.
Oh, and if anyone reads this: Look up some videos of trucks and vans with unsecured loads. Like landscaping trucks and vans, or trucks with Home Depot/home-improvement loads. Their stuff falls off, so follow your reflexive unease and repulsion and leave their lane and proximity.
I was driving a highway in Colorado and I saw a flatbed with a bunch of large haybales, cubes of about 6' each. The top one was unsecured, so I raced out in front of that truck. A few minutes later I saw it fly off the top of the truck behind me. The highway was eerily empty behind me for a while after that. Scary stuff!