One important thing needed

I was pulled over for doing 58 in a 50, but I hadnt even reached 40mph yet. I need to be able to access how fast I was going after I stop driving/riding. Not in a color chart that gives a huge range, but an actual mph at a certain point. The black box only records the last 20 minutes of your drive/ride. Would also like to see how fast Im entering and exiting corners "on the track".

Update: Thanks for the fast response! Email GPX tracks with speed, time and location for proof of speed.

APen01 about Speedometer 55 Pro. GPS kit.