I want more high max speed!

This App is very good and cool:)
If I can say one my desire, I want more high max speed.
I think its more better that this App have max speed more than 300km/h.
(I need 360km/h)
Because I often use this App to measure the speed of bullet train of Japan.

I like this App very much!

ホプ about Speedometer Speed Box, v5.1