Someone driving about 10 mph below the speed limit, and when you attempt to pass them, they speed up...even if it means going above the speed limit, to prevent you passing them. You slow back down, foolishly thinking, ‘Ok, so they weren’t paying attention, and now they’ll go with the flow.’

However, as soon as you ease back behind them, they slow down again!

WTF.

Another one is someone leaving excessive gaps between them, and the vehicle in front of them. Could be general flow, or even at stoplights. There are a dozen of us behind you that may want to either get around, or move into a turning lane, and you’re up there, farting around!

WTF x2.