I put everything I invest on paper.

Bicycle costs around 10 euros per month. To keep it in tip-top state (chain, sprockets, tyres, pads, cables...).

Car cost around 50 euros per month for the same distance, just for fuel.

A decent car costs around 2000 euros.

A decent bicycle costs around 500 euros.

A decent car needs around 150 euros per year for registration, taxes, insurance, and another 150 euros for regular maintenance.