The car to spend your bonus on?

So picture this. A long, long stretch of dual carriageway, two cars simmering beside each other at one end of it; a McLaren F1 plus a weird, insect-like machine with four huge tyres, an absurd number of scoops and winglets along the flanks and across the roof, plus a distinctive white-and-red badge on the nose that reads 'Bugatti.'