RORY: You’re hungry.
LORELAI: No, I’m not.
RORY: Well, you didn’t eat any of your dinner.
LORELAI: Yeah, well, by the time I could get my jaw off the ground, Speed Racer had taken my plate.
Speed Racer (in Japanese, Mach Go Go Go!) is a Japanese animated media franchise based on a manga about car racing, which began showing on TV in 1967, and was one of the first Japanese cartoons to be localised in English for US television.
The eponymous Speed Racer is a young racing car driver with a deep love of family, and a dizzying array of gadgets to help him defeat the bad guys. It has a goofy over-the-top style and cornball dubbing which almost defined Japanese anime for an entire generation.
The original series was shown in reruns on MTV in 1993, when Rory was nine, and she and Lorelai may have watched it together. There was an American-made The New Adventures of Speed Racer the same year, but it was short-lived, and I feel Rory and Lorelai would have considered it greatly inferior to the 1960s original.