Answer
First draw the allene (C=C=C), which is linear because the double bonds on with side result in sp hybridization for the central carbon. Then, add the H's,Cl, and methyls to the 1st and 3rd carbons of the allene (notice that this is a butadiene). Notice that for 1 of the carbons, dash and wedge are used while the other carbon does not use it. This is because the p-orbitals of these end carbons are perpendicular; they are not in the same plane. Therefore, their substituents are also on different planes.
Work Step by Step
This molecule is also chiral despite having no asymmetric carbon.