There's a huge amount of R&D going on at present with vehicle-to-vehicle communications. Not just for the reasons you cite but also things like traffic congestion warnings, so that the sat-nav in the following vehicle can then re-calculate a more efficient route. Basically, vehicles will be able to communicate to others in the vicinity. It's exciting (and slightly scary!) stuff that I'm not really involved in. Who knows, maybe you'll be able to buy an "app" that communicates the presence of a scam van to following vehicle (purely to assist them in the scam partnership's stated aim of staying within the speed limit, you understand)!
I'm sure we'll get the usual arguments about removing control from the driver, but we've been having those ever since the ignition advance control was taken off the lever on the steering wheel!

Without knowing much about it, I imagine that such systems won't be released until the manufacturers are confident that they're not going to get their butts sued - which probably means better than 99.99 (and maybe another 9!) % of drivers. Ultimately, provided they stick to a particular and very specific task, we just have to face up to the fact that the machines are better than we are (which is why they banned various electronic aids in F1). I know I'm certainly not as good as the average F1 driver!
My bigger fear is that there will be "unintended consequences" (say, for example, insurers offering discounts for drivers of such vehicles, which will then gradually morph into insurers artificially loading premiums if you don't have such equipment and then possibly even refusing to pay out if you've disabled it...
...leading it it becoming a legal requirement not to disable it...
...and so on.