First choose a car manufacturer (make) by typing it in and choosing from the drop-down list. Then, name all past/present models by that manufacturer (according to https://www.autoevolution.com/cars/). I was pretty lenient with naming models, for example ‘F100’ would answer models such as ‘F100 GT’, ‘F100 Sedan’, etc. But if ‘F100GT’ was the only ‘F100’ model, you will need the full model answered. First year of model and type (if given) of car shown.