Overnight Bus From Zihua To Puerto Vallarta

Traveling by bus is very common in México and traveling by overnight bus is preferred by most travelers.
It is common nowadays that overnight buses will form convoys which are usually accompanied by Federal Highway Police units adding to the safety of buses and passengers alike.
I can report that I know of at least a half a dozen cases of travelers successfully traveling by overnight bus from Zihuatanejo to Puerto Vallarta without incident.
Bring your own pillows and warm socks.