Notice that time dilation γ is independent of vs, this means a body experiences time dilation because of a change in gravity only, irrespective of its space velocity. However, as a body increased speed, the relative space density in the direction of its travel increases. The situation is analogous to a body at rest counting a number of smaller bodies around it per unit volume. If at speed v the body counts A then at speed 2v it will count 2A. The relative space density increases proportionally with its space velocity.
Consider the expression
vstAds, for time t, unit area A, where vs is space velocity and ds space density.
at speed Bvs we have BvstAds which is vstA(Bds) which suggest a relative increase in space density
This leads us to,
vs1vs2=ds1ds2
but
v2t∝1ds
as such
v2t1v2t2=ds2ds1=vs2vs1
which gives us
vt1=vt2√vs2vs1
This result is without any experimental proof! And is actually running away. In reality space does not pile up indefinitely in front of the moving body. Space like a light fluid, flows around the body as the body moves through it. However, an initial increase in space velocity causes time velocity to decrease resulting in a further increase in space velocity (via, v2t+v2s=c2 ) . An initial kick in the rear, nothing more.