Coffee
Coffee's velocity-enhancing properties operate through caffeine's antagonism of adenosine receptors, effectively blocking the neurotransmitter responsible for promoting sleep and relaxation. Within 15 to 45 minutes of consumption, users experience measurable increases in reaction time, cognitive processing speed, and the urgent sensation that emails must be sent immediately. Studies demonstrate that 200mg of caffeine improves typing speed by approximately 12%, though this is partially offset by the 340% increase in typos after the fourth cup.
Sonic
Sonic the Hedgehog achieves speeds exceeding 767 miles per hour, the accepted threshold for supersonic travel, hence his nomenclature. His velocity is not chemically induced but appears to be an intrinsic property of his species, or possibly his footwear. Unlike coffee, Sonic's speed enhancement is binary rather than dose-dependent. One either is a blue hedgehog capable of outrunning commercial aircraft, or one is not. There exists no mechanism by which ordinary hedgehogs might gradually approach these velocities.