Why do you like to drive at the speed limit? Do you find it just happens to be reasonably set, and it happens to be a speed at which you feel comfortable?<p>Have you driven vehicles in which the speed limit feels dangerously fast, as well as vehicles in which the speed limit feels somewhat low?<p>Do you find the speed limit to be a reasonable &quot;upper bound&quot; for travel, with a fair number of people traveling below it? Or do you find it to be an artificial upper bound, with many vehicles traveling very close to that speed? If the latter, how do you feel about the clumping of traffic and inability to complete passes, change lanes for exits, and the like?