Perhaps the most unusual of the many MiG-25 spin-off ideas proposed in the 1960's, the Ye-155 design would turn the fearsome Soviet interceptor into a VIP business jet. Preliminary design work started in 1963 and continued well into 1965. As a project internally funded by the MiG Design Bureau, as much of the MiG-25's original design was to remain intact as possible. The fuselage forward of the engines would be all-new, being much longer and wider to accommodate a flight deck and passenger cabin with a single row that would fit five to seven seats. The cabin would be accessed via an entry door on the port side immediately aft of the cockpit. The cabin could also be converted into a cargo hold by removing the seats. The wider fuselage necessitated an increase in the fuel load in order to extend the range to 3,000-3,500km (1,875-2,178 miles) at a cruise speed of Mach 2.35. A relatively short range, limited utility and large amount of design work still needed all conspired against the Foxbat Business Jet and the project was abandoned in 1965.