The refurbished DC's arn't MIL-cd compatible I think.. reading from a translation of Sega direct (which is pretty sketchy admittedly)..
They put out a version of Crazy Taxi for the GBA?? Ughh.... that just sounds horrible. [edit] Just checked around some sites and looked at some screenshots. Although the game looks horrible by the standards of a console, I find it truly amazing that the developers were able to pull off what they did using the GBA hardware. Someone out there definitely has some GBA programming skills, even if the game sucks.