Buy a bicycle rack. Mount it on your car. Put your bicycle on the rack before you leave home. When you get to UNA, find the nearest parking space to the building where you have classes. If that space is too far away for you to conveniently walk to class, then remove the bicycle from the bicycle rack, mount it and pedal yourself to your destination. You will then have the bicycle available for convenient travel between all your classes for the remainder of the day.
I don't have a problem with travel from class to class. The campus is tiny. I have a problem finding a space at the beginning of my day.