Average net income a month around here is 1500 €. Most of easily use around 250 € worth of gas and that is in a small diesel engined car. I'm not talking a big V8.
I own a 79 vette with 350 that uses something like 0,25 € for gas only
Luckily I only use it as an oldtimer. But I'm converting to EFI and a programmable EFI. Hope to get my mpg down considerably.