You actually can get bikes for free pretty often, especially if you’ve got the ability to turn a wrench.
And while modern tires probably do incorporate some fossil ‘fuels’ (technically not fossil fuel if you’re not burning it, by the way), they don’t have to. Old school tires are made from vulcanized rubber, which can be made by reacting natural rubber from a rubber tree with sulfuric acid and heat. No fossil ‘fuels’ involved.
You actually can get bikes for free pretty often, especially if you’ve got the ability to turn a wrench.
And while modern tires probably do incorporate some fossil ‘fuels’ (technically not fossil fuel if you’re not burning it, by the way), they don’t have to. Old school tires are made from vulcanized rubber, which can be made by reacting natural rubber from a rubber tree with sulfuric acid and heat. No fossil ‘fuels’ involved.