I get the frustration of being tailgated, especially in the right lane....but I think this is a good opportunity to remind all those cruising in the left lane....

Rsmo 304.015. part 6.

  All vehicles in motion upon a highway having two or more lanes of traffic proceeding in the same direction shall be driven in the right-hand lane except when overtaking and passing another vehicle or when preparing to make a proper left turn or when otherwise directed by traffic markings, signs or signals.

https://www.mshp.dps.missouri.gov/MSHPWeb/Root/PassingandLaneUsageStatutes070113.html

$83 min. fine