So if you dont have an income to spend on T-Shirts and Bumper Stickers, you can do what I did.
Print out a Meme you like, and scotch tape it to the back window of your vehicle.
I used this one with Qanon.pub printed out and added above it.
Now, for the first time in my life, I cant wait to drive in rush hour Heh Heh Heh