Pendulums

Hello together, as you have already learned at the title it is about commuting. My situation is the following: live 100km from home, for professional reasons and now my personal and family circumstances have changed, which is why I would like to be close to my family. Since I naturally also like my work very much and I do not want to exchange it would be the daily 200km to commute about 20km rural road and 80km highway, it is roughly the route Ludwigsburg Cr ailsheim. I would drive home around 6 am at 4:30 pm. The current costs with rent and petrol would roughly correspond to the gasoline and maintenance costs. I would prefer to drive by train (because you can sleep in the morning and do everything in the evening), but that would mean instead of about 3h driving, almost 4.5h driving, and also very bad connections. That means in clear text buses travel every 2 hours. I would just like a few opinions, experience ngen listen, maybe also tips, just to look at the whole thing not only from my side. How about the commuter fee? Can I drop off 200km/day? The thought would then be to invest this money in a new car later on. I will certainly need that every 3-4 years or? Thanks in the vorraus &Grüss Lucy