I grew up in a house, built on the outside of that turn. Track was long gone by 1936, when the house was constructed. The track ceased to be about 1910.

Curiously and sadly, the house I mentioned above was recently demolished to increase the size of a nearby hospital parking lot.

There was another nearby track, this one for the four-legged variety. Grosse Pointe (now an adjacent suburb of Detroit) was a "sleepy" vacation spot for Detroiters wishing to get away from the city at the end of the 18th and beginning of the 20th century.

Here is a link about the race track.

I presume 27 miles per hour was blazing fast for an automobile 114 years ago. At least fast enough to make the papers.