The process for Stolen Vehicle Slowdown would go something like this. A customer calls OnStar to report that his vehicle has been stolen, which would prompt OnStar to locate the car via GPS. OnStar would then provide the car's information and location to law enforcement in the area. The police, when they are able to establish a clear line of sight on the stolen vehicle, can then call into OnStar and request that the car be slowed down remotely. OnStar would then send a signal to the car that would instruct it to reduce engine power, thus slowing the car to an eventual stop.
Although OnStar does provide some potential options for law enforcement, it does not change the mission of PursuitWatch.org. Departments should still submit their officers to the necessary vehicle training, have in place a safe pursuit policy, and provide the proper oversight. Although this could be the beginning of widespread similar technology, right now it is just a drop in the bucket. A vast, vast, vast majority of cars on the road will not have this technology.