Question : Problem: PC without HardDisk but with Flash as HDD

I got 2 months holiday coming up and looking for a Fun and Crazy project to work on.

I want to build a PC without a traditional HDD but with a 2GB or 4GB Flash, 512MB Ram and maybe an AMD processor running on Linux (most likely Ubuntu) for my car.

Requirement:
[1] Commercially available components
[2] Economical hence a Flash based HDD is out of the question.

This question will be in a series of 4 questions.

Question 1
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Before getting into the technical details, has anyone got any ideas and suggestions?

Answer : Problem: PC without HardDisk but with Flash as HDD

Hi, Im not sure where you can get them in america but they have available an IDE to Flash card adapter, you plug a flash card in to the small device and an ide cable to the main board and it acts just like a hard drive.
Here is the link from a NZ store: http://www.dse.co.nz/cgi-bin/dse.storefront/4355a19f0050ad14273fc0a87f9906e9/Product/View/XH4137