I didn't mind the episode...
They've been building up the group's callous nature now for a while, so I felt like this was actually a long time coming where something good in your face may go unrecognized simply because the Ricktatorship is in full swing and he's among the most scarred mentally at this point. It makes you a survivor, and nobody WANTS to question Rick, but clearly others have been there before and are wanting to help him make the right decisions.
Actually I really enjoyed the last line, from Carol, since he made a tough choice regarding her... She backs him up. I thought that was some pretty brilliant writing actually considering she didn't do jack all episode till that last line.
Yeah I don't know how you clear a route... I can't even tell where the hell they are at this point. What state? Maybe they were just saying we came down Route 16, killed walkers along the way, no herds, it's clear... Whereas Route 23 has a herd on it? I almost looked up the routes just to see what they're like, or if they're even real.
The arrow straight road thing, again I have no clue where they are, hah. I just know here isn't flat like that on many roads here. A few, but not many. I suppose it's possible... It wasn't like they were on that straight stretch forever, but they did show in last week's that they were on a pretty damn straight road that went on for a while it seemed.
Regarding the post-rundown thing, I was about to question that too, but it seemed to me they broke through the herd they were in, and wound up out on the other side a good distance from the last of the zombies. It looked like some were following them, others maybe were going to come but a ways down the road, and maybe then they got distracted by the flare that made Aaron freak? I think that's plausible in that situation. They did seem to break through the zombies and be some kind of distance away from the last of them. So I can buy them not having a huge problem to deal with, but one that overwhelmed just basically 3 armed people and a tied up guy. I am ok on that one. Much more so than the road issue... definitely more than the storm thing.
I'd say arms stuck in the hood, for no real reason (why was the hood gapped up that much to allow arms in but not enough to detatch? Not really possible.) and them somehow obstructing the car from starting then... I guess they were trying to imply they were in the serpentine belt, but again that hood would've been unlatched to allow those to jam in, then jam down into the serp belt. THAT is some unbelievable stuff to me.

It'd have been much more likely they broke the radiator and the car just overheated and blew up, and that stopped them.
On the flare, yeah I assume it was a trouble thing, and the other group drove to it (since they, I guess, stopped when the herd appeared and they lost Rick because Glenn hasn't learned NOT to take his eyes off the road in the zombie apocalypse). I am guessing Rick saw the general direction of the flare and they went in that general direction, and lucked into finding the group there all safe with Eric. It seemed like that whole sequence just went entirely too quickly... time constraints on the show and all? Could've probably chopped out some morale dilemma junk and done better explaining how they get from A to B though.
I liked the episode well enough, but it was a lot more of last week, I felt... At least in pace and whatnot. Some zombie killing that was fun, some slow dialogue and debate, character development (and introduction)... It was ok to me, but could've been done better.
The Dale nods were great... That car would be among your worst choices in the zombie apocalypse though, IMO. Gas hog.