These rules aren't in place to annoy people who have fun with cars, they're a public safety issue. Until OpenPilot is confirmed to be safe enough to be road legal in Europe (I doubt it ever will be).
Having a 1366kg vehicle under complete control of a system with the disclaimer
> THIS IS ALPHA QUALITY SOFTWARE FOR RESEARCH PURPOSES ONLY. THIS IS NOT A PRODUCT. YOU ARE RESPONSIBLE FOR COMPLYING WITH LOCAL LAWS AND REGULATIONS. NO WARRANTY EXPRESSED OR IMPLIED.
with hardware that was cobbled together in a garage somewhere, taking this thing out on the road is pure insanity.