We spotted Silvia's car and Jon's car at Six Flags at the same time that we arrived. We all grabbed the clue simultaneously, then drove off. I got on the freeway with Jon; Silvia seemed to stay behind to solve the clue.
Front
Back
By the way, that's faux gold foil around the edge of the front. Number savvy anyone? We took a 15-minute clue for this one, but try solving without the benefit of the Hint first.