After my pre-reserved taxi never showed up to take us from a hotel to the BUD airport early in the morning in May Day (holiday), I was getting quite woried about making our LH flight to connect in FRA.
Then, in the lobby of the hotel, a guest is checking out with an easilly recognizable Star Alliance Priority tag on his rollaboard bag. As soon as he finished his business, I politely asked if he was headed to the airport and he quickly agreed to give us a FREE ride there, provided we didn't mind a stop at the Shell station near BUD.
The man was GREAT, he even worked a few years at San Jose where I have done countless weeks on implementations.
He insisted an taking NOTHING for the ride. And we made our LH flight that connected to our award F (UD) flight back home.