"GMC" is a brand General Motors has used for years to sell light trucks, crossovers, SUVs, and vans. In addition to trucks known by a letter series (like C, G, and K), exactly 13 different model names have been used by GMC since the 1990 model year. (Six of those begin with S, if that helps.) How many of these 13 named GMC models can you come up with in only five minutes? Any score over 33% is a win. Good luck!