If you want to carry your bicycle to places like the park, what is the best way?

Roof racks are expensive and you have to drill holes in your car. I thought trunk racks are the answer, but I keep hearing that they put scratches and dents in your car.

So I think the best way is to remove the front wheel and put it in the backseat. I just have to buy a bicycle with an easily removable front wheel, so I don't have to use a wrench. And I have to get plastic sheet covering, so there won't be dirt and grease stains on the backseat.

Anyone know a better way?