Blood Car (2007) on Netflix

Plot summary

Gasoline prices are at an astronomical high. Archie Andrews, a kindergarten teacher who is a vegan, is trying to build an engine that runs on wheatgrass. He shops at Lorraine's vegetarian roadside stand, and his experiments keep failing. When he cuts his finger, blood drips into the wheatgrass, and once the mixture reaches the engine it operates. Archie takes the car out and gives a ride to Denise, who runs a meat stand and is Lorraine's business rival. She shows an interest in him, but driving her home he runs out of fuel. He begins hunting animals for blood, and their supply proves insufficient.