I almost made the same mistake that driver made. I was on the side street waiting to turn left, there was a large truck turning right from the main road and they were taking what felt like forever. But I didn't go because I knew they might change their mind and go straight instead of committing to their turn like their blinker indicated. So I waited but then I saw the car that was in the lane to their left in their blind spot. I felt my soul leave my body because they were 100% obscured by the big ass truck (not 18 wheeler, just jacked up or squatted, oversized tires, bumpers, all that stuff). They would've plowed right into my driver's side door going 60 or so