Why not XML 

<car>
   <wheels count="4" />
   <doors count="4" />
   <color>Blue</color>
</car>

[download]
This type of problem seems ready for XML especially if other levels are added later like make, model, year, standard, custom, etc. Also you will keep the description of the multiple attributes in your schema allowing the data to be parsed by more than just one specialised app.
"No matter where you go, there you are." BB

In reply to Re: When hashes aren't enough by Ninthwave
in thread When hashes aren't enough by Sprad

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