I have been biking for a while now but mostly for my commute to work. Now that summer is almost here, I am interested in doing longer rides and trails as summer is almost there :). I need a bike rack for my car, which is a sedan (Toyota Corolla). I have a road bike, and a mountain bike, so I might carry one or, the other, or both at times.
What should I consider when buying bike rack / carrier for my car?