See, thats the problem with you crazzzzy driftarsss, always spinning out and crazy stuff. I cant even drive in a straight line and you guys want to go all sideways all crazzy like....crazy
Speaking of which, I think the only time there have even been the chance of accidents with two ON TRACK CARS is when the guy behind gets impatient and maybe tries to creep up too close and pass asap. Just chill out, wait till the guy behind you waves you and you can make a safe pass. I've never come away from an event feeling like I needed more track time. I'd rather get home in one piece that be walking home because I was impatient for 2 laps.
Anyway. An event in the rain will SUCK. If someone goes off they are gonna get stuck.
"Offs" in the mud may also damage suspension parts more yadda yadda yadda. Lets not even think about how changing tires in the rain or how to store your track gear will be. (Hello all my new friends with EZ UPs!

)
But I think we all will probably learn more driving in the wet than we would driving several events in the dry.
Who are we kidding though, this is California. It will probably be 70 degrees out there and sunny sky