The Leerjet 45 XR is a private jet designed by Tanay Gupta as a final project. It can carry up to 9 passengers with a maximum range of 2,102 nautical miles, cruising speed of 526 mph, and can reach a cruise altitude of 43,000 feet within 23 minutes. Key features include a rotating cabin door, angled winglet design with small winglet stabilizers and engines mounted near the tail, and a spacious cabin and seating area.