...From my viewpoint,
Prius drivers have officially taken over the number one spot of
"most annoying drivers to get stuck behind in traffic." 
#2 is still the all-familiar van driver.
On the heals of #2 would be the blue hair driving the '66 Dodge Dart (or the ones that have upgraded to an early 90's Ford Tempo).
Let's hope Congress doesn't assess a carbon tax on gas burners...we Cobra owners will surely get screwed on that one.
-Dean