Are they wonderful gas saving devices ... or a scam?

License Terms:

Private Label Rights Terms & Conditions

[YES] Can be edited.
[YES] Can put your name as the author.
[YES] Can be broken down into articles.
[YES] Can be used as web or e-zine content.
[YES] Can be added into membership sites.
[YES] Can be sold in any format.
[YES] Can be packaged.
[YES] Can be offered as a bonus.
[YES] Can be given away (in any format).
[YES] Can be sold on auction sites.
[YES] Can offer (Master) Resell Rights.
[YES] Can resell Private Label Rights.
[YES] Can be published offline.