...jewels. "Aye bewties they be," beamed McNakajima has he thrust forward his handful of glinting crystals. "They're leadium carbon diamonds anae get them from me wee rotorax when I run it on avgas for more 33% of the time." he explained. "The high temperatures and pressures of the wee austrian screamer turn all the sludge and crud into theses precious things".
Rat thought long and hard (well, sorta hard ) at this revellation.... maybe, just maybe, that trip around the nation could be done after all but perhaps he was just thinking of another austrian screamer that he'd met while.....