I’m not a big user of coasters in the house because I think they are pretty dumb. In the car, I feel a bit differently. It always seems the condensation from my ocean of soda in the morning runs down the side of the cup and ends up making some sort of unremovable paste in the cup holder of my car.
These Star Trek themed auto coasters can help you not end up with that super hard mess in your cup holders.
They have the famous delta logo on them and you get a pair in case you have two spots for cups.
These aren’t the fancy thirsty stone sorts that absorb that condensation, but at least you get the Star Trek logo. The coasters are made from PVC, so you can easily cut them to fit your car. The pair will cost you $9.99 at ThinkGeek.