The cars are tested with pure gas, but regulations require a certain amount of ethanol to be blended into the real-world gasoline supply (up to 10% and the lobby wants to raise it higher), and this drastically hurts efficiency.
Well, "drastically" might be a bit of an overstatement
You are correct on certifications being performed using E0 fuel, while E10 is the norm almost everywhere in the US. There is some desire to allow certifications using higher ethanol blends for flex-fuel vehicles, which would let automakers take advantage of some of the other fuel properties of ethanol (e.g., very high octane rating) to make engines more efficient (and have those efficiency gains actually count for CAFE purposes) and thus offset the energy density penalty.
Have you ever been target shooting? Having to reload a handgun after every three rounds would be a significant inconvenience, for no actual benefit. That's not to say that some sort of limit on high-capacity magazines may not have some effect, but 3 is probably going a bit far.
Also, shotguns are only limited to three rounds when used for hunting or trap/skeet competitions. You can easily find models that hold 7 rounds, e.g.
But Windows Phone does have apps. It has lots of apps, actually. Not the sheer numbers of iOS and Android just yet, though Microsoft's outreach efforts to developers, or their view of the strength of the platform, is such that the selection has been growing at the same rate Apple's did after their launch and faster than Androids. But I can't remember the last time I went to look for something in the Marketplace and came up empty.
You could add to that the issue of integrated features being good enough to make apps redundant (e.g. Bing Local Scout > Yelp!; Bing Music Search > Shazaam!; Bing Vison > tag reader apps; etc.), but all those apps are available regardless, along with all the other big names, and several have better UI experiences on WP than on iOS.
Really, the idea that there aren't apps available is FUD these days. That hasn't been a serious roadblock for a year or more, and the situation is improving all the time. And the presumptive ease of porting apps between WP8 and Win8 can only help in the future.
What Windows Phone really still lacks is consumer awareness, retail sales support, and marketing.
Trap full -- please empty.