What elements of a car accident require extensive police investigation? Crashes that result in serious/critical injuries or fatalities.

Stolen car - weapons involved - kidnapping - hostage - bomb - high speed chase - robbery getaway vehicle... I can think of a few.

unclehomerr..

I was caught up in the traffic from this accident. Sat through 3 red lights with nothing moving. Finally realized that way up ahead about a block up from me there were people moving around in the street out of their cars, which meant, car accident. Most of us moved in to the right turn only lane and used it to move on up and through the intersection and on in to downtown Pleasanton. Sadly, as I drove past, I saw the SUV up on the median crashed in to a tree. But the worst was someone was out on the grassy median lying on their back on the ground with a blanket over them and a person was doing chest compressions. I moved past quick as traffic could allow but haven't been able to stop thinking about that accident. Did the person (not sure if it was a man or woman) make it? Was anyone else hurt? I was about another 3 or 4 minutes down the street before the emergency vehicles came past me on their way to the accident. I immediately started saying prayers and the tear came for a complete stranger. We see this on TV all the time, but to see this and know that someone's heart really had to have stopped for CPR to be administered just shook me up. This was real.

Police said the driver died from what appears to be a medical issue. It's still under investigation, so there aren't many details available yet.

I am so sorry to hear about the bad new, my fish at work died today :(
I mourn for Shark right now. RIP

Not funny, not nice, not clever, not really thinking about the person or their family. Good work there 'sorry to hear'.