I notice that no body has done this so I thought I do it.
Step 1: Things You Need:
You need: a tin car, a speaker, a headphone jack, duck tape,a knife or scissors.
Step 2: Cutting the Hole
Take your knife or scissors and cut the hole for the speaker.
Step 3: Cutting the Headphone Jack Hole
Cut the hole for the head phone jack.
Step 4: Putting the Speaker in the Hole
Put the speaker in your hole. Now connect the headphone wires to the speaker.
Step 5: Ducktape the Speaker
Duck tape the speaker to you're tin car lid.
Step 6: Done!
Put you're head phone jack in you're hole and you're done.