Room Zoom - Race For Impact

Unlocking cars:
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Submitted by: conner54

To unlock other cars, you need to find three keys per level. 
When you begin a level, it is a good idea to find all the keys, 
then complete the laps. It does not matter what you place when you 
are looking for keys; take your time, and complete the level. 
If you do not complete the level and found all the keys, do not 
worry -- you still get the prize. However to go onto the next level,
you must place third or higher.