Slow and Low Chicago Lowrider Festival

Time Out says

Hundreds of tricked-out cars and motorcycles line Loomis Street in Pilsen during this annual community festival, where you can take a look under the hood and watch classic rides bouncing around (with some hydraulic assistance). If you can tear yourself away from the automotive display, you can chow down on tasty tacos, shop for goods made by local vendors and listen to live DJs.