Even if it was just V2 on the road and not a single other car, wouldn't their 40 car caravan cause convergence in itself? I'm trying to imagine 40 cars going through Pierre, SD or Great Bend, KS.
As others have pointed out, I hope Wurman doesn't seriously believe that radar will replace spotters anytime soon. It would be nice, but I don't see it happening in the next 10 years at least.
Right now, the warnings give you enough time (on average) to drop everything and duck and cover. Do we really want to give people enough time to think - and try to pick up their kids from daycare, go out and get fast food real quick, stand outside and watch, etc.? There was another thread about this, and I completely agree with the argument for improving accuracy instead of drastically extending warning time.
I'm wondering when this "chaser vs. scientist" motif will rear its ugly head again. When do we get to see real applications based on results from V2, and how soon until they announce V3 with 200 armor-plated vehicles and a giant hamster ball?