The car slowed down, its wheels softening as they moved across the sandy terrain before smoothly entering the sea. The four wheels underneath bent ninety degrees, transforming into underwater turbines that propelled the vehicle along the seabed.
"This car is amphibious, with enough oxygen inside to support ten adults for three months," Aike explained with a hint of pride, "and in fact, these cars can also fly."
"How do they fly?" Zhang Manman asked curiously, "Do wings extend from the sides and then it accelerates to take off?"
"Heh, that's already outdated," Aike shook his head, "It's anti-gravity!"
Gravity, that is, the force of attraction.
In the vacuum of space, as long as there is matter, there is gravity, varying only in strength.
If humans want to escape gravity and reach the high skies, they must accelerate based on the principle that "forces act in pairs." By taking advantage of air currents and lifting off from the ground, they can then fly.
