Unfortunately, page 2 says it all. Yes, better instrumentation in the key. They mentioned retrofitting with smart phones or dedicated devices (SG/UG), but said that even the small barriers associated with those
"...will be significant for people who may not be enthusiastic about changing their driving style to begin with." That's Governmentspeak for "you're wasting money paying me to write this because nobody here knows how to drive in the first place." The barriers specifically mentioned were
"purchasing a device/foregoing other uses, mounting and calibrating it in the vehicle, etc."
So the main problems identified by the government are:
1. I'd have to buy a gadget.
2. If I don't, I won't be able to text while driving any more.
3. It's hard.
And those are
significant barriers. 
So can Washington force the states to have real Driver's Ed requirements (that actually get applied) and then wait 50 years for the current crop of idiots to die off? They'll have better results from just raising the mpg requirements.
I was impressed that their studies showed that "aggressive" drivers were seeing 20% increases in FE just by calming down a bit. Best eco driving tip:
Watch the road, obey the law and drive safely (contributing to an accident will NOT save fuel).