SodaStream is keeping up its attacks on big beverage companies, despite the fact that it will soon be owned by one. The home-soda making brand today released a new spot that spoofs Coke’s classic “Hilltop” ad.

SodaStream is about to become a part of Coke competitor PepsiCo as a result of a $3.2 billion acquisition that was announced in August and is expected to close in January. And while the new ad mocks a classic Coke commercial, the environmental message could just as easily be taken as a shot at PepsiCo. Both Coca Cola Co. and PepsiCo sell plenty of bottled water packed in plastic bottles. The ad, which was created in-house, targets the environmental damage cause by single-use plastic bottles.

Coke’s 1972 Hilltop ad was shot on a sun-splashed, grassy hill in Italy, with a diverse cast singing the famous line, “I’d like to teach the world to sing, in perfect harmony.” The spot re-entered the public consciousness in 2015 when it was used in the finale of “Mad Men.”

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