-When you're shift+U please have Km/h or mph instead While you move you see the speed.
-If youre having Follow Car, you can the the speed in () those.

Following car: AroX(250Km/h)
2 sec later:
Following car: AroX(278km/h)
Just an example.

Nobody likes my idea

Not really a big deal about this, just would be interresting

I have no idea what you're talking about... but if you want to see the speed of the car you're focused on while in Shift+U mode, just press the space bar.