I have a Trek road bike that I ride for fitness and long rides. I'd like to get something to ride around town/city, to the store, bummin around with my 10-year old, etc. Something to just hop on and go w/out getting all geared up with shoes and bike clothing, etc. I'm wondering if anyone has advice on what to get, a cross bike vs comfort bike, etc. Any advice on a type and a specific brand/bike name would be awesome. Thanks!