The McLaren Senna uses four wheels and a 4.0-litre twin-turbocharged V8 engine to go from 0-100kmh in 2.8 seconds. Very nice. Except the Mbappe, a new model of footballer, uses two legs, ambition and fast-twitch fibre to accelerate dramatically in 2½ strides.
Every day cars growl, horses snort, camels gallop and humans run. We time them, compare them, bet on them and remain bewildered by them. Sometimes the speed that fascinates us is the rapidity with which a life changes in sport. These days you can be famous in no time.