a lot of art serves political or social purposes, and then one could also look at medeival painting/sculture which was all spiritual, functioned as an object within a space, aided supplicants in their prayers, etc, etc. but i do agree that most art falls into your category, i just wouldn't limit it that way (especially since the bikes in question propbably won't be used, like alot of those designy bikes, they're to look at, not touch). form doesn't dictate function.
a lot of art serves political or social purposes, and then one could also look at medeival painting/sculture which was all spiritual, functioned as an object within a space, aided supplicants in their prayers, etc, etc. but i do agree that most art falls into your category, i just wouldn't limit it that way (especially since the bikes in question propbably won't be used, like alot of those designy bikes, they're to look at, not touch). form doesn't dictate function.