what type of tool do you use to cut it so smoothly?

 

There are a number or different tools that we use while cutting plexi one of our primary tools is our industrial inverted pin. Here is a link to our fabrication facility http://www.jmlaudio.com/installation%20bay.htm

 

Great install! Really nice touches all over the place. Congrats.

Only issue: I hope your door window motors never fail though cause I can't imagine taking off all those bolts with that layer of asphault covering 'em!!!
(Most installs I have seen dynamat the outside metal panel, not the inside).