Not much has changed over the years in the way the game looks. Actually, everything looks just like it did 10 years ago, which is a good thing. Crazy Taxi has a simplistic but very bright appearance. The buildings aren't really detailed, but the places that you need to get to are distinguishable. Of course, even if you can't distinguish the building, the huge green border makes it quite obvious where you need to go.
For those of you who are looking for your Offspring and Bad Religion, you're probably going to be disappointed. The licensed music that was part of the original game has expired, so there are new songs from bands that I've never heard of. But you can do custom soundtracks, so consider that a blessing that you don't have to hear the same music over and over again. Instead, you can listen to whatever you want!