Do you need to call a cab? Follow the finger to find out

The “When to call a cab” finger.

5,000 pieces were left on parked cars in downtown Boulder and Denver.

The wiper covers could be easily slipped onto windshield wipers.

“1. Turn wipers on low.”

The fingers were made of cardstock.

The campaign was intended to build brand awareness for Hapa.

TDA_Boulder's community service campaign for Colorado chain Hapa Sushi targeted parked cars throughout the Denver and Boulder neighborhoods where people most often go out on the town. Five thousand hand-shaped wiper covers were left on car windshields with instructions for a field sobriety test to help potentially intoxicated drivers realize they might need to call a cab.

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