The headline “ground swallows car” sounds as if it comes straight out of a Hollywood horror film. But it is actually surprisingly common in areas with either chalk or limestone geology or with a history of mining (which could be for clay or salt as well as for coal).
If you are considering constructing foundations you may wish to consider commissioning us to ‘pile probe’ the area first. Not only will this identify shallow obstructions but it will identify swallow holes, solution features and abandoned underground workings such as the ones that caused this: