I'm currently working on a roller coaster MOC with a looping. I started physically building the MOC but quickly recognised that it is quite a mess to build something, tear it down rebuild it, etc. Another problem are handy bricks I currently do not own and therefore cannot build with. So I switched to BrickLink's Studio 2.0.
Here a rendered image to get a rough idea (the looping idea is not from me, but taken from here):
Now, roller coaster cars do not have an engine, but get an initial potential or kinetic energy and then hopefully do their round.
Is there any digital tool I can use test if the cars come through my track or get stuck in the middle or do I yet have to do trial and error in real-life?