No Reserve: 1981 Buick Riviera for sale on BaT Auctions - ending August 16 (Lot #81,623) | Bring a Trailer
Beautiful design on this generation Riviera, but that V6 engine is a stone. Acceleration could be measured by sundial.
Looks like showroom condition but I would not buy it. If I were to buy a Riviera of this generation it would be a 1979 or 1980 model when you could get the 350 V8 and decent power.