Laser Gun Cupcake Cake How Can I Prove A Laser Detection Gun Was Wrong?

How can I prove a laser detection gun was wrong? - laser gun cupcake cake

A policeman took me and told me he was going 69 in 45 and I'm 100% sure if I wanted to 60 mph when the police took me to show that he initially refused. Upon completion of the issuance of the citation, he chose me, then show me the laser gun speed. I would like this to court to fight, but I do not know how.