When you do go on that site, don't ask everyone to make you one, because they won't, they get annoyed when people are constantly signing up for this exact reason. They're easy enough to make anyway.
I used to do these all the time, check out my old site for some examples (there's even an EK9 on there ) blitzpixelpage
You're right about people getting narked on pixelcars.com but it's not all that hard to do, I only gave it up because I grew up and had less time on my hands, I started doing the little animated avatars as they're quicker to knock up.
Infact if you do visit pixelcars.com look out for me in the banner (the guy stood in front of the white R32 Skyline) I was one of the team of 4 people that designed and produced it and as such we each included ourselves in it
If anyone wants any advice I don't mind shedding some light but don't go PM'ing me to do em for you as I don't get the time to go on my computer much so barely have time don my own stuff never mind anyone elses lol