box = sd.cube( [w_base, w_base, h_wall_box] ) box -= sd.translate([w_wall_box,w_wall_box,w_wall_box])(sd.cube( [w_base-2*w_wall_box, w_base-2*w_wall_box, h_wall_box ...
While the thing to do these days for GPS manufacturers is to cram everything they can into that black box on your dash, Navigon is taking a simpler approach. No MP3, no video capability ...