trying out freewares in modeling a 3d Mazda Rx8

tried a 3D exam but later remembered I do not have softwares for 3D in my macbook since everytime i make 3d im usually in school or my former office using a desktop computer with 3d software installed in it.

I only got a week to model and render this car. and the only thing i could do is to hunt for freewares online. so I downloaded Google Sketchup 8 pro (demo version) so I can model the car. then after modeling the car for 4days i discovered i needed a renderer to render the model. so i found Thea Render (demo version). so far im still not done rendering my car. the picture below is a shot while im uploading my 3d model in the renderer software.

mazda rx8
software used: 3D google sketchup & thea Render
2013