In racing and very - high - performance road cars, other disc materials have been employed. (en.wikipedia.org)
There is also a lot more loading than other disc based games in the series which isn't long enough to be a nuisance but is different from previous games. (entertainmentbuddha.com)
Other than that, the Boundless notebooks are actually compatible with other disc notebook systems like Levenger Circa (Staples and Office Depot also have similar notebook systems). (lawyerist.com)