Earlier on, I encountered a possible bug (albeit a very small one) - quite wierd, but very cool at the same time.

During a race at Odessa Keys, I broke away from the rest of the pack and, as I was flying along, noticed that my ship wasn't making any actual noise. I could hear the 'Whoosh!' as I passed over the boost pads, the squelching/crunching noise whenever I brushed against the track-side walls, and the distant wail of rockets failing to hit their intended victim(s), but my ship was utterly silent. Strange. Definitely won't be forgetting that moment for a while.