The trouble with Formula One cars is they are extremely fragile machines. Countless parts can go wrong and if vehicles get too close to each other the consequences are usually serious.
It was apt, then, for Arsene Wenger to use the analogy of a car at the pinnacle of motorsport to describe Theo Walcott.
Tuned up and not missing a beat, Walcott, like Lewis Hamilton in his McLaren, is poetry in motion.
Walcott's problem has been spending too much time in the Arsenal pits, having various mechanical failures worked upon.