"The deduction for this property may be claimed regardless of whether the property is used in a trade or business."
Keep the receipts - according to this you should get your installation costs back as well:
"Any property installed on a motor vehicle (including
installation costs) to enable it to be propelled by a clean-burning fuel*."
"For vehicles that may be propelled
by both a clean-burning fuel* and any other fuel, your deduction
is generally the additional cost of permitting the use of the
clean-burning fuel."
* The IRS defines Hydrogen as one of several "clean-burning fuels."
You can get back up to $2,000 for a car, or up to $50,000 for a truck!!! Isn't that amazing?
The text below is not written by us, it's copied word for word out of the new IRS code: