Can anyone tell me what just happened at the end of Mad Men

[YouGoonie]

My sky box turned off just after Don, Pete and Roger came out of Lane's office and came back on with Glen driving Don's car!

Erm, let's see...

Roger opened the letter from Laine's office. It was addressed to the partners, he said it was a boilerplate resignation letter. (I didn't know what boilerplate was and had to look it up, it means from a template. But maybe everyone else knows that!)

Don got home and looked veeeery tired and awful. He asked who thingy was, the boy.

Megan explained it was Sally's friend and she'd explain later where Sally was. The boy reminded Don that he used to live on the same road. He said maybe he'd better go. Megan said he couldn't wait at the station until 7 so Don asked where he was going. He replied a couple of hours away. Don offered to drive him. Megan asked if he was ok and he said he'd tell her about his bad day later, gave her a quick kiss.

In the lift, the boy asked Don why everything in life, everything you wanted to do, turned into crap. Don said he was too young to be talking like that. Then he wondered what the boy actually wanted to do, if he could do anything at all? Cut to boy driving car.

!!

I'm so thorough!

Wow thanks! So it wasn't a suicide note then?!
Was such a sad episode, probably the only time I've been able to predict what was going to happen :(

Mmm, it was coming for a few episodes wasn't it?

Yes but so skilful the way we assumed firstly that he would crash the Jag with his wife in it, and then that he would gas himself, and then the hanging was all the more shocking cos you thought maybe the fact that the car hadn't started was a wake up call that made him decide not to do it. I don't think I breathed the whole scene when they cut him down. Shudder...