Slow down before you maim kill someone. Just because you're in the driver's seat it doesn't mean you can barrel down the road thraiping the hell out that noisy engine. You also need to pay attention when approaching the brow of a hill with a narrowing..that means slowing down and driving sensibly, not braking when it's too late. You need to read the road and drive accordingly.
Imagine taking your work van home thats got your company logo on it and think that this is acceptable