What is lot rot? Dry rot on the tires takes years.
Lot rot is different. Tires go flat or develop flat spots, batteries die, cars get dinged while moving them around on the lot and vinyl tops develop leaks or suffer UV damage. They are exposed to rain, wind and debris blowing around and it all takes a toll. After a year on the lot, your brand new auto isn’t pristine anymore.
Nothing good happens to a vehicle that sits on a lot not drive. Lot rot is just a phrase. They just deteriorate all by themselves.