You can learn to make various kinds of origami car here. The easiest one is 2D version of car or school bus. If youare experienced in origami, you could try 3D version of car.
This 3D origami car is derived from 8x8 matrix origami base. It takes 37 steps to complete this model. This origami car is recommended to an imtermediate level origamist.
This 3D origami jeep is derived from 16x16 matrix origami base. It takes 43 steps to complete this model. This origami jeep is recommended to an intermediate level folder.
This origami bus starts from 16x16 matrix base. It takes 27 steps to complete this model. You need to apply a simple crease pattern in the middle of folding sequence.