The downside is that it costs $ 20,000, expensive compared with the $ 1000 needed to purchase a microscope, although the costs of individual tests are similar. (sciencemag.org)
It assesses performance across a state and across the country and doesn't report individual test scores. (jonathanpelto.com)
In individual tests, it scored three stars in a front crash test, five stars in a side - impact crash test and four stars in a rollover - resistance test. (cars.com)