Reportedly, an event happened in New York City where an ambulance transported a man who had an accident with his moped. Later, the injured person realized that the ambulance driver was complaining of a severe chest and left arm pain. Knowing this, he quickly moved towards the front of the ambulance to drive and prevent another accident.
A screenshot of a news report was going around on social media with a claim that a patient had to drive an ambulance after the driver suffered a heart attack.
But apparently this story was cooked up by a Spanish satire website and then translated for a version in English. The Spanish original was set in Valencia instead of New York. That site was an English language version of the Spanish satire site which is actually owned by a Spanish humor website or collective.