). You could stop at one of the speed vans (if there's an actual Officer there), and ask the office if he would check your speed. I did that from time to time when running radar to help people out. Of course that was back in the day when "To protect, and to serve" meant something.
I'd often thought of stopping to ask an officer but never did. I've always reverted to traveling a known distance and checking my time. Like at 80 mph I think it's 46 seconds or something to travel one mile. So if it takes less or more I can start to go from there.If I'm getting what your asking my friend, I'm not sure how these new cars register the speed. The old ones were through a cable connected to the transmission (yeah I'm old
If that's not possible maybe your dealer could help you out.
