There aren't that many on the road to begin with. To put this into perspective: during 1990-1994 there were 5 fatalities in Volvo 240s with 186000 cars on the road [http://www.iihs.org/externaldata/srdata/docs/sr3009.pdf]

Also the roof holding 4 additional cars, that's cute http://www.aronline.co.uk/blogs/wp-content/uploads/2011/09/v...