Maybe they are returning back, Mayank driving and break fails again....but this time Samrat saves them all as he promised to Mayank he won't let anything bad happen. While saving he gets hurt and then both Gunjan and Mayank has the realization that the accident that happened 3 yrs ago was not Samrat's fault. And then Sajan and Sayank re-union.
I think something similar to this line would happen otherwise what's the use of showing that they are struck in that house due to the fact that roads are jamed and they won't be ale to proced further or go bak.