Who is to blame for this? The Architect or the Car Designer?

There is quite a storm brewing over the design of a skyscraper in London where, apparently, stray reflections of sunlight are melting vehicles parked below.  

Now, there is certainly a case for the architect to look at…and maybe this is something he had not considered (would you?). However, my bigger concern is why are luxury cars and vehicles succumbing to this? Growing up in Hong Kong, where cars were parked outside in very high heat all day (40C at times) there was no melting of car body parts or nonsense (granted, some cracked dashboards did occur…). 

My question is this. Who could you look to to blame for this? Architects and engineers not seeing the whole picture or car designers who are using cheaper materials and finishes nowadays?  I’ll be watching this story unfold.