My dad got a speeding ticket once.

He went to court and contested it 'cuz the cop had no proof that he was actually speeding. He got it thrown out and only had to pay like $30 for court costs. This was back in the 80's though.

You can do that you know. Unless speed detectors now record a vehicle's actual speed & the make, model, & license plate number as hard evidence, you can go to court and get it thrown out. All the cop actually has is the dash camera that shows the traffic stop.