Is there a demo? I'd like to try this simulator game but doubt that my graphics card matches the minimal sys reqs.

No demos I've seen I'm afraid. I wish more things had demos but all we can do is the usual and watch other people's reviews on Youtube and if it looks ok watch a playthrough which you would already be doing.

I bought it and it's growing on me. There are very few Bus driving games here on GoG, only 3 now and I have all 3. I first started with Bus Driver Simulator which I enjoyed although it was much more basic than something like Bus Sim 21 but really enjoyable. The other bus game I bought but have not tried it yet which is bus world which is a little different.

:)