When in a race you can see the groups behind, how many are in it and the time gap. It would be a great addition to see the speed of the group too. I think there is space to add it.

In a race last night I could see the group behind was slowly closing the time gap but had no idea how much faster they were travelling. With that info it could have helped to encourage the group I was in to match the speed to hold them off. Equally it could also encourage groups behind to ride faster than the group ahead to catch them.