Thanks for the feed back.
The windows are a bit blown out to try and disguise all of the other car dealerships across the street.
There isn't really a process, all the shots are captured in the same way,
Shoot RAW
ISO at base to make sure the maximum dynamic range is captured.
Make sure your "as shot" histogram is as fat as possible and any clipping is where you want, in this case I was happy to have a bit of clipping in the windows to make sure I had good, low noise shadows.
Also check the 3 colour histograms are OK. Mercedes dealerships always had a lot of blue LED lighting this caught me out on the first job as I had a lot of clipping on the blue channel which I didn't notice at the location.
Make local adjustments to the shadows and highlights in lightroom, if you have the exposure right, probably - 0.5 ev on the windows and + 0.5 ev in the shadow areas will be enough.