As you push through artsy strollers at the Oakland Art Murmur (first Friday of every month) and make your way to the “Giant Burger” parking lot (Telegraph & 21st), you’ll have a “Happy Days” flashback. Vintage cars fill the lot, a DJ spins cruisin’ tunes and the crowd busts sock hop moves. But the jewel last Friday was El Taco Bike. Basking in Lucha Libre glory, it serves up the best carnitas tacos I’ve had in a long time. Even my kids wanted thirds. And the El Taco Bike folks do parties!! Learn more here.