In other words, he's asking everyone to take his car pics and do something like him or better..

redecorate the car in a type of a collaborative project.

just remember to license your designs since these can be used as ideas/references/works for actual print outs.

But the red colour gen-2 you photoshopped look nice     

Nice idea... ^^
well, the major problem is the distortion on the dashboard...

another problem is the sharpness...
the white colour shouldn't be that sharp,
and you should apply some shadows,
to make it more realistic...
creating a clipping layer with darken/multiply blending mode,
and brush some black colours on it will do...

I notice that you have some mistakes in colour changing...
firstly the chairs and dashboard in the first pic,
then the chair in the third pic (this is ok since it's same to the last pic),
and the dashboard & reflection on window in the final pic...
I know it's hard to achieve, especially for the first picture,
but try to fix some easy ones...

btw, nice job you've done, let me think of a red ferrari interior...
ps~ haha, my first post is granted for you... XD

Zhng your car.

Anyway, you need to transform your flower patterns on your dashboard properly, coz obviously your dashboard isn't flat but your flowers are.

Some shading on the words would be good as well. Coz they look too bright. Argh, it burns..

Anyways, good job. Very good job.

not real 1.. hehe
dun bluff me le...
anyway, it nice..........