Firefighters got the call after 8pm last night. Authorities say when the first crews arrived, the building was already fully engulfed. The fire grew to five alarms with crews from 11 different departments responding.
Authorities say one of the big challenges in the fighting the fire was that there are no hydrants in the rural area so water had to be trucked in.
About 150 classic cars were inside the building the building that burned.
The roof of the building collapsed during the fire onto the cars. It took crews until about 11pm last night to get the fire under control.
The business, located off Interstate 55 about 40 miles northeast of St. Louis, is known locally for its impressive display of more than 650 classic cars and trucks.
For a look at what they used to have for sale: