A classic blue Volkswagen Beetle lines up next to a modern red Volkswagen for a drag race .
It is probably not the case that a person holds a flag out in front of two cars to initiate a race .
It is probably not the case that a person holds a flag out in front of two cars to initiate a race .
It is certain that a person holds a flag out in front of two cars to initiate a race .
A person holds a flag out in front of two cars to initiate a race .