Cheapest Motorsport Possible in Europe

Hiya. I've been attempting to do the most cost effective motorsport attainable (excluding rental karta) amd to date I've carried out a 4 hour banger endurance race in Scotland and a 4 hour endurance race in a rusty BMW within the Czech Republic. I dont know if that is the sort of factor you lot are taken with but when so, I hope you get pleasure from it. If of some other loopy low-cost racing on a highway floor, please let me know. I'm all the time on the look out.