1.
Bend a paper clip until it is nearly straight. Then break
off a section that's a little wider than the box. Do the
same thing with the other paper clip. These straight pieces
of wire will be your axles.
2.
Use the push pin to make four holes in the box, two on
each side. Use the pen to make the holes bigger, so the
axles will be able to turn easily.
3.
Use the push pin to poke a hole in the center of each
bottle top. Make each hole a little bigger using the pen.
Then use the paper clip to make the hole the same size
as the axle.
4.
Push a paper clip through the inside of one of the bottle
caps.
5.
Then put the axle through the box and add another bottle
cap.
6.
Do the same thing with the other axles and the other
two bottle tops, and BINGO! You have a car!