I don't think many people will care about the need to always be online. It won't prevent me from playing as often as I like as long as the servers are always working since the only time my internet is out is when my power is as well. It also does not impact my feeling of privaciy as any console that you ever plan on hooking up to the internet again is in no way more private than one that is always online, unless you plan on wiping the hard drive every time you want to go online. Let's also not forget that Sony has had way more security issues with the PS3 than Microsoft has had with the 360. I think the decision is more likely to come down to price; personally, I'm happy to pay $100 more for the new Kinect.
According to the paper,
"Through this scheme,
we have demonstrated a high photoresponsivity of 8.61A/W,
which are about three orders of magnitude higher than those in
previous reports from pure monolayer graphene photodetectors.".
So it is 1000x better than previous iterations of a particular variety of detector, not the detectors we actually use.
In fact this article is referring to the combined english and math scores (their source: http://nces.ed.gov/pubs2012/2012160.pdf page 7). Nobody cares about the essay score, as any selective college will be reading essays you wrote themselves.
I don't see why autonomous cars should have a legal speed limit at all. The whole reason to have one now is that drivers tend to drive outside the capability of their own or their vehicle's capacity and may cause injury to others. With an autonomous vehicle, the algorithms should have a very reasonable idea of the vehicle's capacity because the manufacturers will most likely be in some way liable for the vehicle's actions. So if you're in an autonomous Mercedes, why shouldn't you be doing 150 mph on the highway?
You never know. If the catalysts are relatively cheap, instead of trucking or piping hydrogen to stations to fill up people's cars, you could generate the hydrogen from water and electricity on site. That might be safer because you may not have to store a large amount of hydrogen and the infrastructure is already there (the water and electricity I mean). Of course, that does not solve the storage problem in cars nor the fact that water and electricity aren't free, nor the relatively low efficiency of using hydrogen as a fuel...