Once while i was at cruising speeds in mid RPMs, felt a weird noise and the motor died, luckily i got to park in a sideway without any trouble. Did try cranking few times, but did figure out that it is the broken T-Belt. Anyway, I was lucky, nothing major, just few bent valves, but yeah a costed a lot of time and some money, as I also replaced headgasket, water pump, t.belt tensioner and stuff (Honda D15B)