Update! It hasn't even been a month.
• Retextured
• The new texture looks overall better, is rid of some black lines and artifacts somewhere. Better now.
• The wheels are not at different rotations.
• Still no maps other than the diffuse one. There'll probably be specular later.
• Made a collision mesh
• Somewhat accurately represents the entire model, including the space in the back.
• Warning! The passage in the back of the car, even though being present in the collision model, is not wide enough to let a player through! However, the space inside is very cramped and barely lets you move around in itself, and is not intended to be a part of the gameplay area.
• Additionally, learnt to make indents in lists. They are great.
Also tell me if the archive contains something wrong, though I seemed to pack everything inside carefully.