mid: 1499
url: http://www.3dcafe.com/models/ttruck.zip
ref_url: http://www.3dcafe.com/asp/toy_pics.asp
format: xthreexds 
pid: 29239
polygons: 31813
connected_components: 404
average_dihedral_angle: 0.759926
bounding_box: xmin = 0.025, ymin = 0.025, zmin = 0.025, xmax = 0.975, ymax = 0.382137, zmax = 0.521646
avg_depth: 3.106002
center: (0.459168,0.187540,0.273630)
scale: 0.564462
principle_axes: (0.998908,-0.046695,-0.001310), (0.001411,0.002125,0.999997), (0.046692,0.998907,-0.002189)
principle_values: (0.065892,0.019450,0.005479)