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After you have built the spring motor, you can tackle your first
model: the windup race car. Using the power of the spring motor,
the race car zooms across the floor up to 60 feet! Experiment to
see how far you get can it to go. Challenge your friends to a race
— this car will leave the competition in the dust!
Whoa!
Wind me up and
watch me go!
V
roo
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18
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