After an initial phone call I was invited in for an interview. There were maybe eight applicants altogether that were in that interview meeting. The first part was informational (we watched the video that's on the website), and then we talked a little bit with each other and with the Lyft person. In some ways, that was okay - hey, there are lots of nice people! - but in some ways it's also kind of weird - hey, I hope I get the job and not you! But I wish the others well anyway.
Following that we were shuffled off into different rooms for the "speed-dating" thing that others have mentioned. Again, it was okay - you get like, 3 minutes to chat with somebody and maybe ask them a question or two. In general the team members I met seemed pretty cool, but you only get a moment to get a feel for them before you have to move on. I would much rather spend a greater length of time digging deeper into more meaningful questions with people.
Last, you type out a response to a customer service question so they can check your writing and communication skills.
I got an email a week later saying that they'd selected another candidate with more directly related experience, which irritated me because A) this is a pretty damn entry level position, and B) I've got eight years of professional experience, it just didn't have "customer support" in the title (making a career change). I don't mind missing out on a job and I don't want this to sound like sour grapes, but the reasoning really did bug me.
In short: you get invited in, you meet all of your competition and make nice with them, and then you sit in a room so people can make snap judgments about you one at a time. I'm sure this works well for some people but I found it a bit off-putting.