not really. if you insist that speeding kills, everytime you go over the speed limit, you immediately fall dead. speeding does not kill, and if you do not crash, you'll just arrive at your destination faster.
not really. see those yellow strips across the road? they DO decrease tire grip, and even then, your suspension is already stressed from absorbing the bumps, so it's easier to lose control over the strips. i've seen many accidents caused by this issue.