Which of the two courses should I choose?

Good day,

I'm interested in two things. I love vehicles, their technology, optimization (tuning), and generally everything about cars. But at the same time, even though it sounds strange, I love construction sites: how do buildings hold up, how are they erected, how can certain buildings even stand when, in my head, it's physically impossible. I love the process of building houses, structures, etc., and everything surrounding it.

My question is I am stuck between the decision:

1) Civil engineering with in-depth knowledge of structural engineering and transport and spatial planning

2) General mechanical engineering with a focus on transport technology from the 5th semester onwards (optimisation of all means of transport – from cars and rail vehicles to aircraft and spacecraft).

I've been thinking about it and realized that I love cars but I can't build houses as a hobby but I can work with cars as a hobby and so maybe I can balance both but I'm still undecided.

Could you write about your experience from your studies in mechanical or civil engineering and your everyday life as a civil or mechanical engineer, let's say in traffic engineering? And recommendations or advice are, of course, welcome.

Thank you in advance.