The 2002 BMW M3-GTR is synonymous with rarity. As BMW puts it, “The GTRs (both race and street copies) were never sold to anyone. Only three street copies were built. Not all three were ever shown. A street copy was shown in the US only once, and for less than an hour.” Little wonder, then, that this M3 is bound to be a prize for “Forza Horizon” players.