Subframe and suspension assembly

A system for housing at least one electric motor in an electric automobile comprising:

• a subframe comprising at least two castings extending in a longitudinal direction and spaced apart from one another in a lateral direction;
• the at least two castings coupled together by a laterally extending front cross-car extrusion and a laterally extending rear cross-car extrusion, the rear cross-car extrusion spaced away from the front cross-car extrusion in the longitudinal direction to define an area that is bounded by the at least two castings, the laterally extending front cross-car extrusion, and the laterally extending rear cross-car extrusion;
• a laterally extending roll bar coupled to the at least two castings and positioned over the area to define a motor receiving volume receiving the at least one motor inserted over the front cross-car extrusion;
• at least two braces removably coupleable to the subframe, the at least two braces preventing removal of the at least one electric motor inserted over the front cross-car extrusion when the at least two braces are coupled to the subframe;
• and
• a lower semi-trailing arm hingedly connected to each casting, the lower semi-trailing arm supporting an air spring from below and comprising a vent for drawing in and expelling air from the air spring.