Ack!!! Flashback to my drag racing days, but a fond flashback. I loved doing the numbers, and always challenged myself on reaching for the projected, theoretical limits of performance. While many of the others were just chasing down lower ET's and faster trap speeds, I was happy comparing my time slips to the projected numbers in my notebook.
I find it slightly amusing that there's a Free Fall calculator and a Mortgage Refinance calculator on a page dedicated to racing performance.
"Do I jump now, or put the house in hock...again?"