MATERIALS:

• 5 -Hot Wheels™ cars. (Use cars with a short front to back wheel base.)
• 24 inches -Kevlar. (This can be found in most fishing goods departments of larger stores with the fishing line.)
• 30 minute Epoxy

PROCEDURE:
1 Lay the cars upside down about 1/2 inch apart from each other.

2 Lay the Kevlar from front to back on the row of cars. Tape the Kevlar in place with masking tape. Tape to the center of the car.

3 Mix and apply the epoxy over the Kevlar and at each car's rivet. The cars have two rivets on the undercarriage. Let dry for at least 30 minutes. If the epoxy mix is not right, the cars may have to dry longer.

4 To aide in seeing the center of mass of the train of cars, paint the middle car. It is located at the center of mass.

Hot Wheels™ is a registered trademark of Mattel, Inc.