On a summer night in 1974, Raúl and Lupe stationed their taco truck next to an East LA bar where they became popularly known. Writer and journalist, Gustavo Arellano has credited Raúl as the inventor of the modern taco truck. Fun Fact: In Mexico, it is custom to name your truck - Raúl named his La Güera.

The summer of the same year Raul Martinez parked his newly converted taco truck outside a popular bar in east Los Angeles. According to Raul, he earned $70 on the very first night of vending. Profits only increased as the taco truck, nick-named La Guera, grew in popularity among late-night Los Angeles enthusiasts.