The time each car set on the first day determined the time they set off on the second day , .
Szisz 's first - day time of 5 hours and 45 minutes meant he started at 5 .
The time each car set on the first day determined the time they set off on the second day , hence Szisz 's first - day time of 5 hours and 45 minutes meant he started at 5 .