Here is a fun little car that you can build in under 10 minutes! It can be customized to seat 2 mini-figures as well.
Step 1: Get Parts.
Admittedly I really don't know what all these Lego elements are called so use the picture for a guide.
Step 2: Put Main Front Pieces Together.
Step 3: Install Headlight Mounting Pieces.
Step 4: Build the Chassis.
Step 5: Install the Chassis.
Step 6: Put on the Axle Pieces.
Step 7: Put on the Rear Cowling.
Step 8: Make the Tail Light and Exhaust Unit
Step 9: Install the Tail Light Unit.
Step 10: Put on the Spoiler Pieces.
Step 12: Install the Engine Unit.
Step 13: Install the Front Axel.
Step 14: Mount the Headlights.
Step 15: Put on Underside Engine Detail.
Step 16: Snap on the Wheels and You Are Done! Have Fun!
Classroom Science Contest