I do believe it is a 5 rpm motor, I got the rig from Pugsly on this site. The ghost came from ebay, it is the best I've seen. Worked very well last year. I was going to ad a link of it on ebay but not seeing it right now listed.
Didn't someone create a frame that you could hang out the window??? It was basically the same FCG rig, but it had some type of extension brackets that brought the ghost (not the motor) out the window... That might be very cool. If the weather got iffy, you could just bring her inside.
I also have to second-third-or-fourth the rave reviews for Pugsley. Very well crafted and saved me a WHOLE lot of time and frustration!! I thought it was well worth the inexpensive cost.