What are the key advantages of opting for a car rack with a compact design, particularly in terms of increased clearance, reduced wind resistance, and improved fuel efficiency? How do these benefits translate to enhanced overall cycling experience, and are there any specific scenarios where a compact rack design proves more advantageous than a traditional, bulkier setup? Furthermore, do modern compact car racks compromise on bike security or durability, or have manufacturers successfully addressed these concerns through innovative engineering and materials? Can we expect to see further advancements in compact rack technology, and what role might they play in shaping the future of cycling transportation and storage solutions?