I drove my friends BMW and used the turn signals.

Left turns on solid greens have to yield to oncoming traffic, even if that traffic is making a right turn. Vehicles turning left across traffic only have the right of way for an arrow (protected turn).

For one, your view ahead is of your car’s hood—not of anything else.

And everyone just started cheering more while his car was rolling over. He landed hard, and no one had any idea if he was okay or seriously injured or worse. And they kept on cheering, even whistling and whooping.

But why did he turn?

A minivan with an interior liner does the same job.

You sir are the problem.

Ahh the classic...why did you turn?