No, it is not ....
Thanks, I've read about it. This rear view is really great and makes me think it was speed record car. Did you say what museum it was in as it looks like #9143 in the Mercedes Benz museum. The front view has a "hawk" nose with a sharp projection over the tall radiator--at least on the ones I've seen pictured. #5100 ran over 141 mph at Daytona Beech in 1911. Eddie Rickenbacker raced them also. These were really monsters and it must have been exciting to watch them! Thanks for the great photo and information!