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spray the time notation between the front and back tires. (with chalk). the tool will be 600x the cost of chalk-on-a-stick but at least it's a durable 1x capex.


what if the chalk is from the previous car?


if you've got a device to spray time notation with chalk, you probably can also spray some notation of the car model or license plate


One requires a text entry interface and one requires a battery and a quartz crystal




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