People tend to check in during these times:
Did you know Cadillac Place served as General Motors' headquarters from 1923 to 2001?
The parking lot on WGB, about a blk north of Cass is the best. Dudes are friendly and they never leave the lot.
Parking lot at corner of Blvd& Cass is best. Guys polite $10 all day or by hour. Priority Parking Co
Promise Parking on the corner of WGB & Cass is great. Convenient, $10 all day, & the people are VERY nice :)
Cadillac Place is also called the General Motors Building and the Durant Building. Designated a National Historic Landmark on June 2, 1978, it is an exquisite example of Neo-Classical architecture.