Assuming it was the same as a few years ago, it's the Mercedes Benz dealership on Woodward. It's about 1/4 mile south of 16 mile on the north bound side of the road. It's impossible to miss. The parking lot in front of the dealership is like all parking lots along Woodward, as it runs parallel to the road and has a good number of spots.
As for the guy bitching about Roger being there with his hood up, unlike many other places on Woodward, Mercedes doesn't charge money to park your car(s) there, so anyone has the right to be there, hood up and all.
