In a lot of Massachusetts cities, people paint the lines on sports fields by hand ahead of practices and game days, but in Medford , they're rolling into the future with the " Turf Tank ."

Named one of the best inventions of 2024 by TIME Magazine , the GPS-guided line-marking robot -- built specifically to paint the lines, logos, numbers and hashmarks on athletic fields -- is huge for the city of Medford.

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It fits on a flat bed and runs by itself, and you just hit a button to start painting. Plus, you'd be amazed at how straight it stays.

Before, when it came to lining the four soccer fields at Medford's Playstead Park, it took three to five parks and recreation workers about two days. Now, each field with th

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