We cant possibly even touch the speed of light-
According to the special relativity theory relative mass increases with the increase of velocity . the nearer we are to the speed of light the more mass the object gets.
The equation for this phenomenon is m0/ 1 - (v)sq/ (c)sq
if we let the original mass to be even the lightest of for eg 1kg then the equation will result in something like this - 1kg/1-( (3 x 10^5)km^2/(3 x 10^5)km^2) == 1kg/ 1 - (1) = 1kg/0 = ∞ . now if the relative mass = ∞ according to Einstein's equation e= mc^2. the energy required to move an object of ∞ mass would be ∞ itself. The energy in the universe itself is finite then how in the batmobile will we be able to harness infinity energy.
*Light travels at this speed cuz it aint no relative
Iam a 8th grader btw