In the suburbs around Detroit, there are as many as 15 venues per nite with cruise-ins. Wednesday is the busiest.
I went to one last Thursday. I was the only Kaiser and the only car! Construction on the main road and impending rain kept everyone away.
The largest is in Milford, home of GM Proving Grounds--many as 1,200 cars every Sunday.
Finally, there is the Woodward Dream Cruise every August--estimated 1,000,000 people and 40,000 cars!!!