I don't smoke but I do use the lighter socket in my Mazda3 regularly for my mp3 player so I wanted to make a more stylish lighter socket plug. This one is a mashup of the Flying M Logo by nclontz2 (http://www.thingiverse.com/thing:280788) with a lighter plug base redesigned using measurements taken from the plug here (http://www.thingiverse.com/thing:551287). The thin slots are only 100microns wide so they get printed in but they force the printer to draw lines along the cross-section and strengthen the tabs so they shouldn't break. The fit is perhaps a little tight so you may want to shrink in XY by 1-2% if you prefer.