Texas: Slower traffic MUST keep right...
It's been slow in coming. Texas started by posting signs that said "Don't slow Texas down, keep right except to pass". That has helped a LITTLE. They've started posting signs on I-35 from San Antonio to Dallas reading "SLOWER TRAFFIC MUST KEEP RIGHT", and INFORCING it! Maybe they'll get to the rest of the state soon...
My pet peeve "but I'm going the speed limit!".
'57 190SL (toy)
'08 S5500 (mine)
'09 CLK550 (wife's)
'06 SLK350 (daughter's)
'11 GLK350 (daughter's)
'03 CLK310 (spare)