Double Dash lived up to my expectations, which were set rather high after many exciting nights playing Mario Kart 64. The single player experience is challenging after finishing the 50cc class.
The courses are just what you'd expect after 64, but that's not necessarily a bad thing. Just don't expect a whole lot of new material here. Unlockables provide motivation to keep playing.
All in all, the game is a lot of fun. A lot of the same fun, but that's certainly not a bad thing.