User blog comment:Superman37891/PEPTO BISMOL/@comment-30754445-20170427172623/@comment-28606698-20170428080801

According chaotic inflation theory, size of some universe (in the infinite multiverse)

$$R =R_0\text{exp}(\sqrt\frac{8 \pi G \rho_{vac}}{3}t)$$

where G - gravitational constant, t-time and $$\rho_{vac}$$ - density of vacuum,

$$\rho_{vac}\le \frac{c^5}{\hbar G^2}=\rho_{pl}$$ - Planck density, where c-speed of light, $$\hbar$$-reduced Planck constant

Fundamental constants take different meanings in different universes and the multiverse is infinite, I believe,

thus, some universe with c=gongulus km/s somewhere  exists and it has corresponding size