Just wanted to clarify that this isn't a bug either.
The white bikes without riders load in to reduce join lag when you're on track. If the game had to load in the full bike and rider from a player that's just joined, while you're on track, you'd get massive lag.
The white bikes without riders load in to reduce join lag when you're on track. If the game had to load in the full bike and rider from a player that's just joined, while you're on track, you'd get massive lag.