Check out this incredible wartime photograph from Motor Transport's archives.
Birmingham played a key part in the war effort - and because of this it was a major target for the German Luftwaffe bombing offensive. The protection of the population was down to the Air Raid Precaution (A.R.P) services - thousands of men and women who voluntarily risked their lives for the safety of others.
What you are looking at here is a controlled test of ARP shelters - which have just had a building collapsed on them to see how they withstand the impact. The job of clearing up the aftermath fell to demolition contractors G Williams & Sons of Aston, which removed the rubble in one of its 1938 Bedfords.