[ehnto]

I had a similar experience. The impetus for me was always building bikes rather than actually riding them though, so the compromise was getting a project car instead! I haven't calculated the micromorts of circuit racing mind you..

[obstinate]

Probably depends way too much on personal factors like experience, speed, which course, what type of vehicle . . .

[ehnto]

Exactly, it would be nearly impossible to figure out. Unless you were in a particular long running event with hisotorical data.