It's an effect caused by the updraft of dust pressing against the tyres of hovering vehicleswhich makes them appear flat at the bottom. I thought it was quite realistically depicted, actually.
(
Ptolemy the man with the silent pea,
Wed 14 Jan 2009, 22:51,
archived)
In that case, my work here is doneG'night b3ta!
( Ptolemy the man with the silent pea,
Wed 14 Jan 2009, 22:53,
archived)