Mechanical engineer Sarah Grenier fulfills her need for speed by transforming her beat up VW into a sleek, slick racecar...and races it herself.
The first season concludes when the DS teams develop and test a "summer sled" for retail giant L.L. Bean. Watch now.
Build a circuit to power an alarm so small that you can hide it.
Make your own battery-operated car.
Enter our design contest and win big!