It's not the speed that worries me the most, it's the fact of accidentally ramming someone being unaware where and how close are the other cars to me, when passing or being passed..... I'm not always aware of where the race line exactly is if it is not being turned on with '4'th key
... and find it hard to know who as the priority, what you are allowed to do or not.... and it goes very quickly, if I don't look beside of my car I hit someone, and if I look long enough to judge the situation, I end up loosing control because I was not looking where I'm going....