He loves choo-choos

Evan loves choo-choo trains! When I'm desperate for something to do, I take him to Barnes & Noble to play with the trainset there (we wash up well afterward!). As soon as we get near the B&N parking lot, he starts saying "choo-choo."
Also, we can barely hear a train whistle at our house sometimes. I would usually never notice the sound but Evan does! He starts saying "choo-choo" as soon as he hears it.
Last week, Rob took him to ride a train at a nearby park and he loved it! I think we found a theme for his 2nd bday party.