 and how many miles it's traveled in the meantime. And then over an extended period of time, you can get a sense as to whether that vehicle is generating the range that it is supposed to. And range is really what consumers are most concerned about, of course. And you can see, A, is it generating the level of range that was promised when the vehicle was new? And secondly, has that deteriorated over time or how quickly is it deteriorating? So it's all generated by data generation.