Mystery Car 74 is probably not topping anyone’s wish list. But it is a car that you don’t see every day. Mystery Car 74 is a 1970 AMC Ambassador. With a clean body, comfortable seats, and a smooth ride, this might just be the ultimate salesman’s car. But, you have to wonder what kind of mileage the V8 is currently offering the owner. Wikipedia says the car has one of two 360 c.i. engines: “Two of AMC’s 360 cu in (5.9 L) were optional; a 8.5:1 compression version with a two-barrel carburetor or a high-compression four-barrel V8 that required premium-fuel.” The new owner has been driving it for 6 months now, so I’m guessing it’s the low compression engine.