hyperspeed
superfast
hell-for-leather
speed of light
breakneck
high speed
lightspeed
overspeedily
hyperaccelerated
hyperfast
hypervelocity
bullet
superspeed
mile-a-minute
like shit through a goose
lightning-quick
on the wings of the wind
like the wind
blazing
faster than Minute Rice
hyperpaced
warp speed
blistering
splitting
pedal to the metal
vibratory
balls-out
rate
head over heels
bomb
fleet
swift
lickety cut
feverishly
accelerando
lickety split
speedingly
high-speed
high-velocity
like a rat up a drainpipe
speedily
in short order
rapidly
apace
hyperlight
quickly
at full tilt
chop-chop
overspeedy
prestissimo