"limited by the fraction of time that the improved part is actually used" Driving is the 90% part of delivery. More powerful bike doesnt only mean faster top s

"limited by the fraction of time that the improved part is actually used" Driving is the 90% part of delivery. More powerful bike doesnt only mean faster top speed, it also accelerates much quicker letting you jump in front of everything else on every lights. Legal bikes are 250-500W with 750w max, delivery drivers dont want to use anything below 1.5kW.