I've been asked to make 3-D car cakes of a Vauxhall Astra and an Audi A4. Does anyone have a good tutorial on how to carve and cover car cakes? It's my first time doing a car! It will be covered in fondant and I'm terrified that it will rip and crack, any tips on how to prevent this?
Thank you in advance!

If you have some time, order the dvd from Mike McCarey called "Cakeology", it's a great dvd and it will take you step by step.

If you don't have time, go to Flickr and look up "Bellatheball", she has step by step pictures on doing a car cake, it is great and funny. She's also on CC, so look her up, she's really nice and very helpful.

Thank you!
still have the problem with my fondant tearing and cracking though

Try rolling the fondant thicker than usual (especially in the middle). The fondant needs to be smoothed over from top to bottom, gently covering each part as you move down.

I did a racing car last week using my son's car as a guideline.
http://deepdelights.com/2012/04/21/racing-car-cake/

Regards,
Deepali

Im doing my first 3rd cake cake this weekend for the hubs...It'll be a mercedes ml350. Will share my experience once Im done.