Our cars are getting smarter, like most other technology; and technology tends to do what we tell it to, and does not engage in "fudging" or equivocation. When a 57-year-old woman's car was involved in a hit skip in Florida, the car's technology did not consider whether it should use it's 911 response to report the incident, even though she herself had fled the scene. She was later arrested.
However, in the case of hit-and-run drivers there will be nowhere to hide — as their car may snitch on them. You are automatically linked to a record of a collision’s time, the vehicle involved — and therefore the accompanying registration details — and the location.