It seems working now. (Mon July 13, 10:43 Pacific).

One thing I noticed is that the range is capped to 100 miles. An unlimited range would be incredibly useful for searching for used exotics, i.e. Ferraris, which is a valid input parameter :-). Since supply (both overall and for a particular configuration) is so limited, it makes sense to buyers to fly to see the car or to buy blind and ship the car to them.