formula 1 car 3d model

Create a fully parametric, watertight, manifold 3D CAD model of a 2026 Formula 1 car following Fédération Internationale de l’Automobile aerodynamic philosophy. Units in mm, symmetric about Y=0, Z=0 as plank plane. Overall length 5550, wheelbase 3400, max body width 1900, max height 950. Smooth NURBS solids only, STEP-ready, min wall 2.5 mm, no self-intersections. Nose tip at X=-1100, width 120 expanding to 300 at front wing. 4-element front wing, span 1800, chord 350, fully solid with endplates. Ground-effect floor with Venturi tunnels starting X=1500, diffuser from X=3000, exit height 350, smooth 7–12° ramp. Sidepods at X=900 with 80 mm undercut, max width 1600. Coke-bottle engine cover tapering to 350 at gearbox, oval intake 250x180. Dual-element rear wing at X=5400, span 1000, height 900. Smooth, regulation-style, underfloor-focused aero.