Silhouettes is Hot Wheels’ premium line for race-bred bodywork: cars wearing silhouette-style shells, widebody kits and aero that blur the line between road car and racer. The theme has appeared across premium assortments in recent years, giving collectors track-car drama in the metal-on-metal format covered in our Hot Wheels premium guide. What makes a silhouette car? Silhouette racing began in 1970s Japan and Germany — think the outrageous Super Silhouette race series where production shells hid tube-frame monsters. The Hot Wheels line channels that spirit with cars like the Nissan Skyline RS KDR30 Super Silhouette, which we have stocked in its purple HW J-Imports mainline form. Premium versions take the…