dexlargo - he's a driver of some sort (taxi, HGV, whatever) and he wasn't looking where he was going (changing tape/mobile phone etc). Suddenly, he looks up and sees he's heading straight towards a large bus (coincidentally the last bus of the evening)...
He swerves... and misses! Hurrah, no real damage, just a few shaken nerves. He lives, happily, to fight another day.
Am I right?
(edit: just seen
mathmo's... I like it!
)