In online play, Mario Kart DS toned down vehicle interactions and certain weapon functions because of the existence of lag-- it was impossible for software to know where exactly everybody was all of the time.
Consequently, the gameplay of single player mode and local wireless multiplayer was from a mechanical perspective quite distinct from that of the true online play mode.
Just curious-- are y'all expecting something like this for Pulse? Will SL tweak the game mechanics to limit potential gameplay problems with lag?