http://www.mr-gasket.com/hotrod/demo/8703_demo.html
Its a calculator designed to do the math hot rodders and drag racers are always doing. I thought it might be pretty cool but I wonder how hard it is to use and would like to talk to somebody who has actually used one. I can't find an actual price either, but the website says less than $100. So I figure its going to be $99.99