weird

[ca18datsun510]

so im driving down the highway the other day and all of a sudden i hear this loud noise under my car like i ran something over. i look in the rear view mirror and see what i thought was a truck tire, but i didnt see anything in the road ahead of me. when i got to where i was going i looked my car over and the whole drivers side inner fender liner was gone. all the screws and everything are still attached, and nothing is damaged. i dont get it. really strange. any body have an extra one laying around? i also need a speedometer, a passenger side hood hinge, and a 92 up front bumper. thanks