SAN ANTONIO The owner of Grouchy Mamas Food Truck says she has lost 80% of her business due to COVID-19. She said with more people working from home, they no longer post up at their lunch spots. The pandemic has also canceled a lot of events, including Fiesta, that normally draws a lot of business for food truck owners. Emergency TABC amendment relaxes requirements for Texas bars to reopen as restaurantsFlores said she and other food trucks owners have had to adapt to the times. Some food trucks have also partnered with bars to serve food.