Body conforming fuel tank cap

In an automotive vehicle having a body with an external surface, a fuel tank filler pipe having an open end adjacent the body external surface and a depression formed in the body external surface and defining a generally continuous annular surface around the fuel tank filler pipe, a fuel tank cap assembly comprising:

• a plug portion sealingly engageable with the fuel tank filler pipe solely by nonrotational insertion into the filler pipe to a rotatively fast sealing position;
• a cover portion fixedly carried with said plug portion at one end of said plug portion and having an outer surface distal said plug portion that substantially blends with the body external surface within said depression when said plug portion is in said sealing position;
• a latch assembly carried with said cover portion and having an actuator member laterally movable with respect to the cover portion;
• a catch engageable with said fuel tank filler pipe and linkage means interconnecting said actuator member and said catch to move said catch between a position preventing nonrotatable movement of said fuel tank cap assembly with respect to the fuel tank filler pipe and a position permitting such movement;
• primary latch means engageable with said plug portion for releasably securing said fuel tank cap assembly in said sealing position;
• and
• secondary latch means operatively disposed between said cover portion and said fuel tank filler pipe to selectively limit movement toward said free position.