I guess they do it for dramatic purposes, erm. Build the tension and speculation and keep folk typing... all part of this new fangled disruptive marketing.
Interesting from the T&Cs
Drivers who are identified as attempting to defraud the incentive will be excluded from this and all future promotions.
Strange that they'd contemplate accusing a man of attempted fraud, must be a lawsuit in the making there... surely a general right to exclude any individual without giving any reason would have been more sensible?