Plastic blinker assembly question

Some time after I put the Magnum in my Dart I took my Wife to the store in it, and on the way back I lit the tires for about 100 yards and she FREAKED OUT.
She wasn't pissed, but was hyperventilating badly.
What's up with that? :D
Mine loved it !! She loves old fast cars..after the 1/8 th rip I did she says ahhhh I love and miss that smell!!!