I was visiting a friend in Boulder for a few days. I saw a silver (I think) E0 parked down on 12th St. It had MD plates and a CEG sticker on the left rear window, who was it?!

And to my question...I visited Boulder for a few days, and absolutly loved the area. It was my first time out West, and I really loved it, especially around Boulder. So much that I'm going to apply for a few jobs out there. I really enjoyed the active lifestyle, and the people there. So, to local residents of Boulder or surrounding areas:
How do you like actually living there, through all 4 seasons? Any issues with tourists? What are the winters like there? How does it compare with other places you have lived (esp. with Michigan if possible!)? Biggest downfalls to living there (besides no liquor sales on Sundays)?
Anything else you'd like to throw in would be fine, I'm just trying to get a quality opinion from some locals. Thanks!