Black Box in Speeder's Car Helped Conviction

This article in Newhouse News tells the story of a man who was recently convicted of two counts of manslaughter and vehicular homicide each, partially on evidence obtained from the Electronic Data Recorder (EDR) in the car. EDR's are found in all cars with airbags to measure the performance and effectiveness of the airbags and the conditions in which they are used. In this case, the EDR revealed that the driver was not traveling at 60 mph, as he claimed, but actually peaked at 114 mph (in a residential neighborhood) just seconds before the collision. Could this be the forerunner of many such cases in the future, where our cars tell the unadulterated facts, rather than subjective personal accounts?