“By then it was 63 ft (19 m) long, and 53.3 ft (16.2 m) wide, and capable of a maximum speed of Mach 0.85 and a range of 7,240 km (3,910 nmi). As an executive jet, it had sufficient capacity for 14 passengers.”
From Wikipedia. It can go about as fast as a standard passenger jet. I assume someone with money to burn chartered it for two passengers.
Regardless, the crew ran it out of fuel, just plain stupidity to die from fuel starvation.