Thank you for the nice comments! I used scrap wood and two old trucks I had laying around with an inline slide switch to the 9 volt battery. The camera was an inexpensive 2.4 ghz mini wireless video camera I had purchased a while ago. (Picked up on Amazon). The camera was a fun build since all I have to do is hook it up to the front of any of my trains and I can get the engineers perspective of my layout.
Coolness Factor is high since my daughter, who never ever even glances at my trains commented it was "nice."