halo car
n.— «“Halo cars,” stylish vehicles built to attract customers to showrooms, work well for some dealers. They are not meant to bring in lots of money in sales but to spark conversation so that the brand stands out among competitors.» —“‘Halos’ light way for Detroit” by Rick Popely, Jim Mateja Chicago Tribune Jan. 15, 2005. (source: Double-Tongued Dictionary)