Thanks Peter.
Yes I know it's just a hobby, but it's also my specific interest.
Specific interest that we autists have a tendance to focus on, while ignoring the rest of our surroundings and getting too obsessed untill we find ourselves overwhelmed too late.
I booked this race after le local one was cancelled yet again. But instead of being just an hour from my home, I would have to drive the car 6 or 7 hours to get there. 1st big mistake.
2nd mistake: thinking (hoping) that the Fiero woudn't break down.
3rd mistake: thinking that the Fiero wouldn't break down, but if it did I could fix it at the track.

4th mistake: thinking I could cope with the camp site and the after hours festivities that these kind of events seem to bring out of everyone involved. (Locally, I can just drive home once finished racing and come back the next day. I can limit the interaction time with other people. Yeah, I know that makes me sound like a mean person, but it's just the way I fonction. I'm not mean, I like talking motors, cars, etc... with other "gearheads" But after a certain amount, I can no longer do it and have to move to a quieter area.)
5th mistake: not having a viable means of getting home without the car. (This race track is in the middle of nowhere. No one drove their race car to the event; everyone had trailers or race car transporters. In the end, my wife drove 6 hours to collect me. We still have to go back next week, with a rented car transporter, to get the Fiero. Had I planned a bit better, I could have rented this transporter for the actual race week end, and probably found a bed-n-breakfast/hotel à little way from the site as well.)