How to Build a Car in Ultimate Car
Pick a Body and Engine
Start with a body block: Acacia Wood Body, Birch Wood Body, Crimson Wood Body, Dark Oak Wood Body, Jungle Wood Body, Oak Wood Body, Spruce Wood Body, or Warped Wood Body. Larger builds use the matching Big body variant. Choose a 3 Cylinder Engine or 6 Cylinder Engine for power. Add a Battery for electrical storage and a Canister for fuel. Wheels are required — Big Wheel for larger chassis.
Assemble at the Car Workshop
Place a Car Workshop and interact with it to open the assembly interface. Insert the body, engine, battery, wheels, and canister into their slots. Use Car Workshop Part where the interface requests structural pieces. Add a bumper (Acacia, Birch, Crimson, Dark Oak Wood Bumper) and a license plate holder (wood variants, Diamond License Plate Holder, Emerald License Plate Holder, or Gold License Plate Holder) if you want those fittings. Finish the build to spawn the vehicle.
Finish and Drive
Place Asphalt, Asphalt Slab, or Asphalt Slope for roads. Use Guard Rail, Arrow, Arrow Left, Arrow Right, Arrow Left Diagonal, Arrow Right Diagonal, Arrow Left Right, Long Arrow, Corner Line, Double Line, or Zebras to mark lanes and crossings. Drive over a Car Pressure Plate to trigger redstone. Park using the Parking and No Parking signs on a Sign Post.