A license to drive an HGV - 40 tonne truck - is VERY different from your average 'corolla' license. I know that from experience with big 18 wheelers... Besides, the new rigs being 'drive by wire' - yep, I'll bet my gran could drive one..
Flying very well, very averagely or very poorly largely boils down to ABILITY - although good training and experience can mitigate this to an extent... You can go through the EK 'rocket science by oz-mates' training school and still only be a fairly average aviator (whatever your background) - I've flown with some guys recently who make you sit up just that little straighter if you know what I mean
