I use it tu push harder on short flat ride. I show my avg for the ride and my current speed. My goal is to always keep my speed ahead of my avg. It's a way I found to push really hard on short rides (about 25kms). I start in the city with a lot of stop an go, so when I start rolling for real, my avg is at 19-20km/h, and get it up to 32-33 at which point it becomes really hard to keep up. When I reach my limit and fall under the avg, I just try to keep it above 30 for the rest of the ride (which is really good for me).

(I know some people will tell me it's just a dump technique and that I should to intervals and everything, but that's my fun to do this )

On my longer ride (~65kms, I just try to be around my avg on the ride (about 25km/h with a lot of climbing)