Went from $800. on a $1200. recumbent trike to $3000. on a $1200. trike to an additional $1000. for motorizing + about $1000. for Lexan; add a few maintenance costs... worked extremely well for 7 years- great 2003 project for me!
I saw this today and thought "here we go again 10 years later":
Silver Bullet Bodywork and Accessories for Velomobile Catrike - from AEM Consulting, Inc