This was posted over at the Audi forum. Kinda interesting.
http://www.speedtrap.org/speedlimits/speedQA.html

An excerpt:
Q: But, if you lower the speed limit, people drive slower. Right?
A: The answer is no, just as people don't automatically drive faster when the speed limit is raised. These are common misconceptions, along with the mistaken belief that speed limit signs will decrease the accident rate and increase safety, and highways with posted speed limits are safer than unposted highways.

__________________
past MB rides:
'68 220D
'68 220D(another one)
'67 230
'84 SD
Current rides:
'06 Lexus RX330
'93 Ford F-250
'96 Corvette
'99 Polaris 700 RMK sled
2011 Polaris Assault
'86 Yamaha TT350(good 'ol thumper)