picked up from where the previous chapter ended as Speed-o'-Sound Sonic used Serious Side Hops to develop enough speed to create ten after images, With that, the ninja launched his Ultimate ...

Meanwhile, Flashy Flash was surprised that Speed-o'-Sound Sonic defended against his Flash Kicks. Hence, he believed Sonic could land a counterattack on him if he was serious from the get-go.

a "boomless cruise" option in which its planned Overture supersonic airliner would fly a little faster than the speed of sound without a sonic boom reaching the ground. The Denver startup ...