(n.) The quality or state of being speedy.

agility air speed alacrity briskness celerity decisiveness dispatch expedition expeditiousness fastness flight flit flurry ground speed haste hurry hustle immediacy immediateness instantaneousness knots lightning speed miles per hour nimbleness precipitation promptitude promptness punctuality punctualness quickness rapidity readiness round pace rpm rush rustle sharpness smartness snappiness speed spryness summariness swift rate swiftness velocity