Minivan confusion

I wish I would have taken a picture. Instead I will try to set the scene. I went to Costco. I went in and went about my shopping. I came out walked up to a van, thinking it was mine and tried to get in. I could not. I tried hitting the unlock button and it wasn't working. I glanced down at the drink holder and noticed this was indeed not my car! I went to the next van and got in, luckily it was mine. I look down the row of cars to see 5 gray Honda Odyssey's in a row! They all looked EXACTLY alike. I really need to get a monogrammed sticker or something for the back to distinguish it from all the others.