Suns out early this time of year, and I've been getting a couple hours in before work when its decent. I usually leave my board in the car and my suit in a covered tote/bucket. But now its getting warmer and despite leaving my windows cracked open, it smells like hot wax and broiled wetsuit funk in my car every afternoon when I punch out!
I know its not good for your board, and probably not your wetsuit. It's only gonna get hotter.
Any suggestions for me? Preferably not of the smart-ass variety?
I'm usually the opposite, have my gear in the car all day and go for a post work session. I usually keep an old beater around to leave in the car on the hot days so I don't have to worry about damaging one of my good boards. Best advice I have is try and park in the shade, crack the windows, and maybe get a couple of those reflective things for your windows to keep some of the heat out. It's going to get hot in there regardless, but you can try a few things to make it better.
With regards to your suit, you gotta try to wash it off pretty good, or else its going to stink bad, and get ruined. Check out this "solar" shower, which you could use to rinse off after a session....super cheap: