Just finished New Car.
This ep is the real start of the Arkady/Oleg relationship when they discuss the submarine explosion, Within the ep it's reflecting the Jennings' response to the sub accident. Oleg has a scene playing videogames with Nina and at an arcade with Stan where he talks about games in Gorky Park, paralleling Henry's story.
In the larger story it's laying the foundation for a lot of important things: Arkady learns that Oleg's family doesn't use their connections to get out of service, that Oleg has a brother in Afghanistan and that Oleg and his father will say when the Soviets screw up.
This is one of the rare episodes that have Henry story, with the foundation laid in the previous ep. Right from the start of the show, it seems, the show decided to present the Henry/Philip connection by having them unwittingly parallel each other rather than having them have scenes together even though they hang out. (At this point we don't yet know that Henry's attack on the hitch hiker in Trust Me echoes Philip's own childhood.)
Paige isn't in this ep, but she seems more present on rewatch because it’s the ep where Elizabeth chooses to let Larrick kill Lucia, her protégé. Elizabeth is clearly upset at what she did, explaining that Lucia didn’t understand “what they do” or what was important and if she didn’t understand that she didn’t understand anything.
Watching it now, it’s hard to not think of Paige as Lucia not just because she’s a younger protégé, but because understands and shares Elizabeth’s priorities even less than Lucia did. In fact, Elizabeth’s defensive speech in Jennings, Elizabeth is sort of a variation on this idea, where she's angrily explaining her priorities. Yet Elizabeth is far more sensitive and protective of Lucia than she is of Paige later, when she's walking dead.
Also, when Larrick kills Lucia he's holding her the same way Philip holds Paige in the final parts of their fight in Great Patriotic War.
On the Philip/Henry side, Philip buys the car he’s been wanting and Henry gets caught playing with the Intellivision he’s had his eye on. (Matthew Rhys does a really great job with his look when the salesman’s says the only thing that matters is how the car makes him “feel.”) Henry’s final breakdown is obviously more connected to Philip than Elizabeth--his defenses of his behavior are weaker than hers and he's painfully aware of his behavior making him appear a bad person despite his best intentions.
A whole day at least seems to go by in between finding out what Henry did and talking to him. The immediate distraction is Elizabeth's being distraught over Lucia's death, which Philip comforts her after. It's a subtle affirmation of the dynamics of the family. Philip and Elizabeth's primary relationship is with each other. (The kids do not mirror this by being similarly intensely close to or supportive of each other.)
Philip himself is feeling like a bad guy--he creates a cruel tape to manipulate Martha but winds up acting the caretaker instead. He's also reluctant to hurt Lewis, the truck driver, and insists on not killing him. Plus, he learns the plans he stole might have caused the death of 160 sailors, so maybe he's doing it for no reason (as he'll ultimately say to Stan in the garage). Both Philip and Henry wind up soured on the thing they wanted so badly and saw no reason they shouldn’t have. Neither of them will be put off of videogames or cars forever, but I think they both still carry the lessons of this episode.
Another conflict for Philip in this ep is stated by Martha in the first scene when she says some people manage to have important jobs *and* families--iow, he should be able to have a life outside of his work. That's partly what he's saying to Elizabeth when he tries to get her to admit she enjoys her stuff in the US.
Stan spends most of the ep chasing down leads to take down Oleg and protect Nina (who's touched at the risk he's taking for her), with a quick break for a stunningly thoughtless conversation with Sandra. When she reminds him she’s graduating from a seminar she’s taking it doesn’t occur to him to ask to attend the ceremony rather than generously assure her he can find dinner on his own. I think there's a real contrast between this and the Jennings' marriage in S6 where Elizabeth clearly misses Philip even while she's dismissing him. Stan's just accidentally making it clear how checked out he is.
Sandra and Stan's divergent paths really do seem different. Philip and Elizabeth, both here and later, are basically both searching for that same balance; Philip’s just the only one admitting it.