The Brief A Metra train car turned into a DJ café for commuters Friday morning The event featured iced coffee, music, snacks and swag — all before 9:30 a.m. It’s part of a broader push to promote biking and transit commuting in ChicagoChicago commuters had a fun way to enjoy their morning coffee Friday — inside a Metra train car turned pop-up party. What we know:Metra and the Active Transportation Alliance teamed up to host a Commuter Coffee Rave at LaSalle Street Station. The event was open to the public and required no registration — but the coffee and snacks were first come, first served. The backstory:The Commuter Coffee Rave is part of ATA’s Bike Commuter Challenge. Last year, the agency relaxed its Bikes on Trains policy, allowing bikes on every train and installing new racks on many cars.