I recommend this Audi, meets all your criteria and is a really fun car.

I never heard of a mushroom or fungus tire but Goodyear has been working on a tire made from old recycled tires and moss. I think most manufacturers have recycled and or sustainable products but they still cost more than the base level tire most people end up buying. I have heard some manufacturers are looking at using organic rubber from tree and dandelion farms.

I would love to hear a country song about running a train through rural America.