I'm sorry to say that this theory has already been expounded by Jane when she was looking for any excuse and of course if a butterfly in the Amazon jungle can change events in the UK then a swallow in the garage is undoubtedly responsible for the car rolling out of the garage and hitting the house.
You're wasted out in Bulgaria. you could be doing stand up in the UK ;-) Jane says she'd give you £3.50 as a contribution.