Well, if you're in the peleton taking turns it's a heck of a lot easier to get up to 50km/h on a flats.

In-city speeds are fairly low, but as the pack builds it becomes large enough to essentially ignore traffic signals and settle into a steady mid-30s.

So, if you're gonna stop at lights you'll be dropped. You are warned. There are a lot of amateurs with too much testosterone and not enough experience.