I had fun doing that. I started downhill and worked hard doing pulse and glide as well as stealth driving to achieve that... I posted all in a thread a while ago, you can read it here:

http://priuschat.com/forums/prius-ma...prius-joy.html

hi there!, im just messaging you to wonder how on earth did you manage to get such good MPG. Judgin by your profile picture looks like you got 99.9 MPG for 30 minutes, WOW. How where you driving? down a hill or on a flat street in EV mode.

Regards