Source: TB
This Drive-In did indeed have "stepped" ramps, where one was slightly higher than the one in front of it. It closed after the 1983 season due to a combination of declining attendance, light pollution problems from the growing area around the Drive-In, plus the fact the property it sat on was more valuable the the income from the theatre itself. It was then torn down a couple of years later and a Sam's Club store was built on the site. It would eventually move to another location and State Farm Insurance later moved into the building.