There is "NO" correct time to drive in excess speeds of the vehicles capability. Are we all guilty of it? Yes! 160 on a ZRX at night, with no traffic, you think it's safe, or "OK" till something happens beyond your control.. such as a Dog in your path, or road debris. Everytime you push your limits, and the limits of the vehicle, bad things can happen. We are all guilty of it, and to point fingers makes us hipocrites.
I would hate to think of the thoughts running through the heads of the 4 others in the car, who had absolutely no immediate control of their destiny, as this BMW was careening through the air..
R.I.P. My prayers to the families..
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We can always choose to percieve things in life differently. It's important to focus more on what's right in life.. versus what is wrong.