Hello, fellow European. The starting price of electric cars is definitely the biggest issue (and there isn't a sizable second-hand market yet).
If you want to spend even less find out if you can convert your car to LPG. I have been driving with LPG for about 2 years and I couldn't be more satisfied.
According to the german Ministry for Economic Affairs and Climate Protection, there is not much difference in operating costs between an electric vehicle and a CNG/LPG vehicle. Source: PDF from June 2023
But this does not take into account the price of the vehicle as such. In this case, lpg is much cheaper.
I have no experience with ZFS and didn't know it supported project quotas too. I found out about XFS from an LPIC book where it said that XFS, unlike other filesystems, also supported project quotas (this was about 10 years ago). It's been working fine for me the past few years, so I've never looked for alternatives. Now I'm curious.
I use XFS on partitions where I need to implement project quotas.