Since you are charged with 40+ over the speed limit, you could be in trouble. You are best served by hiring an experienced traffic attorney to get you the best possible outcome.
You definitely need to hire an attorney in your area. Not only do speeding charges over 40 miles an hour carry major consequences against your driver's license and your insurance, they carry huge fines and even potential jail if convicted as charged. You need to have an advocate to argue facts for you in mitigation. Good luck
The information provided in this answer does not create an attorney-client relationship. If you are interested in his legal services, feel free to call Chris at (303) 409-7635 at his law office in the Denver Tech Center. All initial consultations are free of charge.