Guess what: now you can drive a Lego car just like little Lego people do, and without having to wear those snap-on pants. Raul Oaida built a real human-sized car out of Lego! He used half a million Lego pieces, including 24 tiny windshields to make one big one. It drives on tires that look just like Lego tires, except much bigger. Thanks to a real engine running on air, the car can drive up to 20 miles per hour. The question is, how many tiny Lego people can fit inside?

*Wee ones:* What shape is a car tire?

*Little kids:* If the 10th piece in the side door is black, how many yellow pieces come before it? *Bonus:* If the 12th piece is black in the next row, then the 14th piece in the next, then the 16th in the next…which piece is black in the next row?

*Big kids:* The car uses 500,000 pieces. If each of the 2 doors uses 100,000, how many are left for the body of the car? *Bonus:* If the windshield uses 24 mini windshield pieces with 6 pieces across in each row, how many rows tall is it?

Answers:

*Wee ones:* A circle (or in 3D, a “torus”).

*Little kids:* 9 yellow pieces. *Bonus:* The 18th piece.

*Big kids:* 300,000 pieces! *Bonus:* 4 rows tall, since 6 x 4 = 24.