I'm with ya there, Just two years ago and after close to twenty years, I got a three car carport, and built a two car lean to off my deck in which two house my cars.
All that time, I just had no option but to have them covered and believe me, anything I did to them appearance wise, it always got fu@#ed up. Now at least, I am only fighting dust and pollen insted of rain, wind, snow and sun.