Driving home last night from Soton, just pulled off the M6 onto a country lane, and my brake pedal went solid and the engine nearly died....ARRRGGGHHH NO BRAKES!!
So Luckily (having just done 250 miles on the motorway) I could just coast into the verge safely from about 30mph.
Had a look under the bonnet (why? Pitch dark!), could see nothing, so restarted the engine, which barely ticked over, and hear a loud hiss....turns out that the hose from the end of the inlet manifold to the brake servo had split and at some point had been sleeved with another slightly larger bore hose!!....
Quite sure I would have noticed that in the years I have had the car and the amount of time spent under the bonnet!

Anyway, it scared the bejesus out of me.....