Guyot Speciale at a racing event in the Garage Banville, Paris, 1927

[grobmotorix]

Who knows this racing car?

Make and year are sufficient for one point.

One extra point for the exact (and quite unusual) place, where this race event took place...

[grobmotorix]

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[grobmotorix]

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[Wendax]

German?

[grobmotorix]

Car and place are not German.

[targhediferro]

BUC?

[grobmotorix]

Not BUC.

[Wendax]

American?

[grobmotorix]

Well not American, but the first guess BUC hit the correct country instantly...

[Wendax]

I think it could be a 1926 Guyot-Speciale.

[Paul Jaray]

Or a Lombard 1.5 Litre?

[grobmotorix]

One point for Wendax!

It is indeed a Guyot race car.

Now there is a second point available for the unusual location of this event.

LOCKED for Wendax.

[Wendax]

Inside a building?

[grobmotorix]

Yes - a building very closely related to cars...

[Wendax]

Probably an automobile factory. If it was Italian, I would say Lingotto, but I don't think that a rare French car would have been raced there. It doesn't look like Quai Javel or Ile Seguin either.

I might have another picture of the same event, stored for quite a while without further information:

[grobmotorix]

Not a factory.

Where to go with a car in a crowded city...? 

PS: the photo you posted might indeed show the same event!

Three more guesses for you, O.K.?

[Wendax]

Okay, it is a hillclimb race in a multi-storey car park, in Paris. Unfortunately, the French term for it is just garage. Ever tried googling it? 
It is not Garage Ponthieu. I found a second photo to the one posted by me before:

[grobmotorix]

It is not Garage Ponthieu...

But it is a Paris garage, of course.

Two more tries.

[grobmotorix]

To help:

it was a massive eight-storey building, and here is a photo of the facade:

[Wendax]

Well, I finally found it. And no, I didn't spend the night virtually walking through Paris by looking at Google Streetview. 

The race took place at the Garage Banville:

[grobmotorix]

Wow, now you definitly deserve the second point!

[nicanary]

The manager of the Garage Banville was none other than Robert Benoist, famous pre-war grand prix driver and later a leader in the Resistance.

[grobmotorix]

Interesting!

Thank you.

Here´s a rather funny participants of that race:

[grobmotorix]

I found a magazine clipping from February 1933.

It seems it was "en vogue" to celebrate the opening of new big garages with a race in the old days in France...

Wendax, I think your first two photos show this different event at a new garage at Rue de la Tombe Issoire:

[Wendax]

Thanks for that. If the building still exists, it should be this one, formerly a BMW dealer, recently being converted to an apartment building (two-room apartment starting at € 840,000  ):