Really? Those people who cant figure out how to engage their cruise control are the bane of my road tripping existence.
Especially when they pass you oh-so-slowly forcing you you to slow down to get in the passing lane behind them when you encounter the next few cars, then they slow down while passing, only to speed up again 2 miles later after you overtake them....
Its about the mildest possible of infuriating, but its like water torture.